Transmission Configuration Indicator State Management
A wireless device may use different power control sets to communicate with different transmission reception points (TRPs). The power control set for communicating with a particular TRP may be selected from at least two power control sets configured for a resource (such as a bandwidth part (BWP)), for example, based on a transmission configuration indicator (TCI) state corresponding to the particular TRP.
This application claims the benefit of U.S. Provisional Application No. 63/336,097, filed on Apr. 28, 2022. The above-referenced application is hereby incorporated by reference in its entirety.
BACKGROUNDA wireless device communicates with a base station using a transmission configuration indicator (TCI) state. The wireless device uses a transmission power that is based on a power control set for the TCI state.
SUMMARYThe following summary presents a simplified summary of certain features. The summary is not an extensive overview and is not intended to identify key or critical elements.
A wireless device may communicate with a plurality of nodes, such as, a plurality of transmission and reception points (TRPs). The wireless device may be configured with at least two power control sets for a communication resource (such as a bandwidth part (BWP)). The wireless device may select, from the at least two power control sets, a power control set to communicate with a TRP of the plurality of TRPs. The selection may be based on a transmission configuration indicator (TCI) state corresponding to the TRP, for example, to optimize communication power between the TRP and the wireless device. Additionally or alternatively, the wireless device may use a default TCI state (e.g., a TCI state associated with a physical cell identification (PCI) of a serving cell) to receive the downlink signal, if the time offset between a downlink signal and downlink control information (DCI) scheduling transmission of the downlink signal is too short.
These and other features and advantages are described in greater detail below.
Some features are shown by way of example, and not by limitation, in the accompanying drawings. In the drawings, like numerals reference similar elements.
The accompanying drawings and descriptions provide examples. It is to be understood that the examples shown in the drawings and/or described are non-exclusive, and that features shown and described may be practiced in other examples. Examples are provided for operation of wireless communication systems, which may be used in the technical field of multicarrier communication systems. More particularly, the technology disclosed herein may relate to wireless communication exposure detection and/or reporting.
The wireless device 106 may communicate with the RAN 104 via radio communications over an air interface. The RAN 104 may communicate with the CN 102 via various communications (e.g., wired communications and/or wireless communications). The wireless device 106 may establish a connection with the CN 102 via the RAN 104. The RAN 104 may provide/configure scheduling, radio resource management, and/or retransmission protocols, for example, as part of the radio communications. The communication direction from the RAN 104 to the wireless device 106 over/via the air interface may be referred to as the downlink and/or downlink communication direction. The communication direction from the wireless device 106 to the RAN 104 over/via the air interface may be referred to as the uplink and/or uplink communication direction. Downlink transmissions may be separated and/or distinguished from uplink transmissions, for example, based on at least one of: frequency division duplexing (FDD), time-division duplexing (TDD), any other duplexing schemes, and/or one or more combinations thereof.
As used throughout, the term “wireless device” may comprise one or more of: a mobile device, a fixed (e.g., non-mobile) device for which wireless communication is configured or usable, a computing device, a node, a device capable of wirelessly communicating, or any other device capable of sending and/or receiving signals. As non-limiting examples, a wireless device may comprise, for example: a telephone, a cellular phone, a Wi-Fi phone, a smartphone, a tablet, a computer, a laptop, a sensor, a meter, a wearable device, an Internet of Things (IoT) device, a hotspot, a cellular repeater, a vehicle road side unit (RSU), a relay node, an automobile, a wireless user device (e.g., user equipment (UE), a user terminal (UT), etc.), an access terminal (AT), a mobile station, a handset, a wireless transmit and receive unit (WTRU), a wireless communication device, and/or any combination thereof.
The RAN 104 may comprise one or more base stations (not shown). As used throughout, the term “base station” may comprise one or more of: a base station, a node, a Node B (NB), an evolved NodeB (eNB), a gNB, an ng-eNB, a relay node (e.g., an integrated access and backhaul (IAB) node), a donor node (e.g., a donor eNB, a donor gNB, etc.), an access point (e.g., a Wi-Fi access point), a transmission and reception point (TRP), a computing device, a device capable of wirelessly communicating, or any other device capable of sending and/or receiving signals. A base station may comprise one or more of each element listed above. For example, a base station may comprise one or more TRPs. As other non-limiting examples, a base station may comprise for example, one or more of: a Node B (e.g., associated with Universal Mobile Telecommunications System (UMTS) and/or third-generation (3G) standards), an Evolved Node B (eNB) (e.g., associated with Evolved-Universal Terrestrial Radio Access (E-UTRA) and/or fourth-generation (4G) standards), a remote radio head (RRH), a baseband processing unit coupled to one or more remote radio heads (RRHs), a repeater node or relay node used to extend the coverage area of a donor node, a Next Generation Evolved Node B (ng-eNB), a Generation Node B (gNB) (e.g., associated with NR and/or fifth-generation (5G) standards), an access point (AP) (e.g., associated with, for example, Wi-Fi or any other suitable wireless communication standard), any other generation base station, and/or any combination thereof. A base station may comprise one or more devices, such as at least one base station central device (e.g., a gNB Central Unit (gNB-CU)) and at least one base station distributed device (e.g., a gNB Distributed Unit (gNB-DU)).
A base station (e.g., in the RAN 104) may comprise one or more sets of antennas for communicating with the wireless device 106 wirelessly (e.g., via an over the air interface). One or more base stations may comprise sets (e.g., three sets or any other quantity of sets) of antennas to respectively control multiple cells or sectors (e.g., three cells, three sectors, any other quantity of cells, or any other quantity of sectors). The size of a cell may be determined by a range at which a receiver (e.g., a base station receiver) may successfully receive transmissions from a transmitter (e.g., a wireless device transmitter) operating in the cell. One or more cells of base stations (e.g., by alone or in combination with other cells) may provide/configure a radio coverage to the wireless device 106 over a wide geographic area to support wireless device mobility. A base station comprising three sectors (e.g., or n-sector, where n refers to any quantity n) may be referred to as a three-sector site (e.g., or an n-sector site) or a three-sector base station (e.g., an n-sector base station).
One or more base stations (e.g., in the RAN 104) may be implemented as a sectored site with more or less than three sectors. One or more base stations of the RAN 104 may be implemented as an access point, as a baseband processing device/unit coupled to several RRHs, and/or as a repeater or relay node used to extend the coverage area of a node (e.g., a donor node). A baseband processing device/unit coupled to RRHs may be part of a centralized or cloud RAN architecture, for example, where the baseband processing device/unit may be centralized in a pool of baseband processing devices/units or virtualized. A repeater node may amplify and send (e.g., transmit, retransmit, rebroadcast, etc.) a radio signal received from a donor node. A relay node may perform the substantially the same/similar functions as a repeater node. The relay node may decode the radio signal received from the donor node, for example, to remove noise before amplifying and sending the radio signal.
The RAN 104 may be deployed as a homogenous network of base stations (e.g., macrocell base stations) that have similar antenna patterns and/or similar high-level transmit powers. The RAN 104 may be deployed as a heterogeneous network of base stations (e.g., different base stations that have different antenna patterns). In heterogeneous networks, small cell base stations may be used to provide/configure small coverage areas, for example, coverage areas that overlap with comparatively larger coverage areas provided/configured by other base stations (e.g., macrocell base stations). The small coverage areas may be provided/configured in areas with high data traffic (or so-called “hotspots”) or in areas with a weak macrocell coverage. Examples of small cell base stations may comprise, in order of decreasing coverage area, microcell base stations, picocell base stations, and femtocell base stations or home base stations.
Examples described herein may be used in a variety of types of communications. For example, communications may be in accordance with the Third-Generation Partnership Project (3GPP) (e.g., one or more network elements similar to those of the communication network 100), communications in accordance with Institute of Electrical and Electronics Engineers (IEEE), communications in accordance with International Telecommunication Union (ITU), communications in accordance with International Organization for Standardization (ISO), etc. The 3GPP has produced specifications for multiple generations of mobile networks: a 3G network known as UMTS, a 4G network known as Long-Term Evolution (LTE) and LTE Advanced (LTE-A), and a 5G network known as 5G System (5GS) and NR system. 3GPP may produce specifications for additional generations of communication networks (e.g., 6G and/or any other generation of communication network). Examples may be described with reference to one or more elements (e.g., the RAN) of a 3GPP 5G network, referred to as a next-generation RAN (NG-RAN), or any other communication network, such as a 3GPP network and/or a non-3GPP network. Examples described herein may be applicable to other communication networks, such as 3G and/or 4G networks, and communication networks that may not yet be finalized/specified (e.g., a 3GPP 6G network), satellite communication networks, and/or any other communication network. NG-RAN implements and updates 5G radio access technology referred to as NR and may be provisioned to implement 4G radio access technology and/or other radio access technologies, such as other 3GPP and/or non-3GPP radio access technologies.
The CN 152 (e.g., 5G-CN) may provide/configure the wireless device(s) 156 with one or more interfaces to one or more DNs 170, such as public DNs (e.g., the Internet), private DNs, and/or intra-operator DNs. As part of the interface functionality, the CN 152 (e.g., 5G-CN) may set up end-to-end connections between the wireless device(s) 156 and the one or more DNs, authenticate the wireless device(s) 156, and/or provide/configure charging functionality. The CN 152 (e.g., the 5G-CN) may be a service-based architecture, which may differ from other CNs (e.g., such as a 3GPP 4G CN). The architecture of nodes of the CN 152 (e.g., 5G-CN) may be defined as network functions that offer services via interfaces to other network functions. The network functions of the CN 152 (e.g., 5G CN) may be implemented in several ways, for example, as network elements on dedicated or shared hardware, as software instances running on dedicated or shared hardware, and/or as virtualized functions instantiated on a platform (e.g., a cloud-based platform).
The CN 152 (e.g., 5G-CN) may comprise an Access and Mobility Management Function (AMF) device 158A and/or a User Plane Function (UPF) device 158B, which may be separate components or one component AMF/UPF device 158. The UPF device 158B may serve as a gateway between a RAN 154 (e.g., NG-RAN) and the one or more DNs 170. The UPF device 158B may perform functions, such as: packet routing and forwarding, packet inspection and user plane policy rule enforcement, traffic usage reporting, uplink classification to support routing of traffic flows to the one or more DNs 170, quality of service (QoS) handling for the user plane (e.g., packet filtering, gating, uplink/downlink rate enforcement, and uplink traffic verification), downlink packet buffering, and/or downlink data notification triggering. The UPF device 158B may serve as an anchor point for intra-/inter-Radio Access Technology (RAT) mobility, an external protocol (or packet) data unit (PDU) session point of interconnect to the one or more DNs, and/or a branching point to support a multi-homed PDU session. The wireless device(s) 156 may be configured to receive services via a PDU session, which may be a logical connection between a wireless device and a DN.
The AMF device 158A may perform functions, such as: Non-Access Stratum (NAS) signaling termination, NAS signaling security, Access Stratum (AS) security control, inter-CN node signaling for mobility between access networks (e.g., 3GPP access networks and/or non-3GPP networks), idle mode wireless device reachability (e.g., idle mode UE reachability for control and execution of paging retransmission), registration area management, intra-system and inter-system mobility support, access authentication, access authorization including checking of roaming rights, mobility management control (e.g., subscription and policies), network slicing support, and/or session management function (SMF) selection. NAS may refer to the functionality operating between a CN and a wireless device, and AS may refer to the functionality operating between a wireless device and a RAN.
The CN 152 (e.g., 5G-CN) may comprise one or more additional network functions that may not be shown in
The RAN 154 (e.g., NG-RAN) may communicate with the wireless device(s) 156 via radio communications (e.g., an over the air interface). The wireless device(s) 156 may communicate with the CN 152 via the RAN 154. The RAN 154 (e.g., NG-RAN) may comprise one or more first-type base stations (e.g., gNBs comprising a gNB 160A and a gNB 160B (collectively gNBs 160)) and/or one or more second-type base stations (e.g., ng eNBs comprising an ng-eNB 162A and an ng-eNB 162B (collectively ng eNBs 162)). The RAN 154 may comprise one or more of any quantity of types of base station. The gNBs 160 and ng eNBs 162 may be referred to as base stations. The base stations (e.g., the gNBs 160 and ng eNBs 162) may comprise one or more sets of antennas for communicating with the wireless device(s) 156 wirelessly (e.g., an over an air interface). One or more base stations (e.g., the gNBs 160 and/or the ng eNBs 162) may comprise multiple sets of antennas to respectively control multiple cells (or sectors). The cells of the base stations (e.g., the gNBs 160 and the ng-eNBs 162) may provide a radio coverage to the wireless device(s) 156 over a wide geographic area to support wireless device mobility.
The base stations (e.g., the gNBs 160 and/or the ng-eNBs 162) may be connected to the CN 152 (e.g., 5G CN) via a first interface (e.g., an NG interface) and to other base stations via a second interface (e.g., an Xn interface). The NG and Xn interfaces may be established using direct physical connections and/or indirect connections over an underlying transport network, such as an internet protocol (IP) transport network. The base stations (e.g., the gNBs 160 and/or the ng-eNBs 162) may communicate with the wireless device(s) 156 via a third interface (e.g., a Uu interface). A base station (e.g., the gNB 160A) may communicate with the wireless device 156A via a Uu interface. The NG, Xn, and Uu interfaces may be associated with a protocol stack. The protocol stacks associated with the interfaces may be used by the network elements shown in
One or more base stations (e.g., the gNBs 160 and/or the ng-eNBs 162) may communicate with one or more AMF/UPF devices, such as the AMF/UPF 158, via one or more interfaces (e.g., NG interfaces). A base station (e.g., the gNB 160A) may be in communication with, and/or connected to, the UPF 158B of the AMF/UPF 158 via an NG-User plane (NG-U) interface. The NG-U interface may provide/perform delivery (e.g., non-guaranteed delivery) of user plane PDUs between a base station (e.g., the gNB 160A) and a UPF device (e.g., the UPF 158B). The base station (e.g., the gNB 160A) may be in communication with, and/or connected to, an AMF device (e.g., the AMF 158A) via an NG-Control plane (NG-C) interface. The NG-C interface may provide/perform, for example, NG interface management, wireless device context management (e.g., UE context management), wireless device mobility management (e.g., UE mobility management), transport of NAS messages, paging, PDU session management, configuration transfer, and/or warning message transmission.
A wireless device may access the base station, via an interface (e.g., Uu interface), for the user plane configuration and the control plane configuration. The base stations (e.g., gNBs 160) may provide user plane and control plane protocol terminations towards the wireless device(s) 156 via the Uu interface. A base station (e.g., the gNB 160A) may provide user plane and control plane protocol terminations toward the wireless device 156A over a Uu interface associated with a first protocol stack. A base station (e.g., the ng-eNBs 162) may provide Evolved UMTS Terrestrial Radio Access (E UTRA) user plane and control plane protocol terminations towards the wireless device(s) 156 via a Uu interface (e.g., where E UTRA may refer to the 3GPP 4G radio-access technology). A base station (e.g., the ng-eNB 162B) may provide E UTRA user plane and control plane protocol terminations towards the wireless device 156B via a Uu interface associated with a second protocol stack. The user plane and control plane protocol terminations may comprise, for example, NR user plane and control plane protocol terminations, 4G user plane and control plane protocol terminations, etc.
The CN 152 (e.g., 5G-CN) may be configured to handle one or more radio accesses (e.g., NR, 4G, and/or any other radio accesses). It may also be possible for an NR network/device (or any first network/device) to connect to a 4G core network/device (or any second network/device) in a non-standalone mode (e.g., non-standalone operation). In a non-standalone mode/operation, a 4G core network may be used to provide (or at least support) control-plane functionality (e.g., initial access, mobility, and/or paging). Although only one AMF/UPF 158 is shown in
An interface (e.g., Uu, Xn, and/or NG interfaces) between network elements (e.g., the network elements shown in
The communication network 100 in
A user plane configuration (e.g., an NR user plane protocol stack) may comprise multiple layers (e.g., five layers or any other quantity of layers) implemented in the wireless device 210 and the base station 220 (e.g., as shown in
PDCPs (e.g., the PDCPs 214 and 224 shown in
The PDCP layers (e.g., PDCPs 214 and 224) may perform mapping/de-mapping between a split radio bearer and RLC channels (e.g., RLC channels 330) (e.g., in a dual connectivity scenario/configuration). Dual connectivity may refer to a technique that allows a wireless device to communicate with multiple cells (e.g., two cells) or, more generally, multiple cell groups comprising: a master cell group (MCG) and a secondary cell group (SCG). A split bearer may be configured and/or used, for example, if a single radio bearer (e.g., such as one of the radio bearers provided/configured by the PDCPs 214 and 224 as a service to the SDAPs 215 and 225) is handled by cell groups in dual connectivity. The PDCPs 214 and 224 may map/de-map between the split radio bearer and RLC channels 330 belonging to the cell groups.
RLC layers (e.g., RLCs 213 and 223) may perform segmentation, retransmission via Automatic Repeat Request (ARQ), and/or removal of duplicate data units received from MAC layers (e.g., MACs 212 and 222, respectively). The RLC layers (e.g., RLCs 213 and 223) may support multiple transmission modes (e.g., three transmission modes: transparent mode (TM); unacknowledged mode (UM); and acknowledged mode (AM)). The RLC layers may perform one or more of the noted functions, for example, based on the transmission mode an RLC layer is operating. The RLC configuration may be per logical channel. The RLC configuration may not depend on numerologies and/or Transmission Time Interval (TTI) durations (or other durations). The RLC layers (e.g., RLCs 213 and 223) may provide/configure RLC channels as a service to the PDCP layers (e.g., PDCPs 214 and 224, respectively), such as shown in
The MAC layers (e.g., MACs 212 and 222) may perform multiplexing/demultiplexing of logical channels and/or mapping between logical channels and transport channels. The multiplexing/demultiplexing may comprise multiplexing/demultiplexing of data units/data portions, belonging to the one or more logical channels, into/from Transport Blocks (TBs) delivered to/from the PHY layers (e.g., PHYs 211 and 221, respectively). The MAC layer of a base station (e.g., MAC 222) may be configured to perform scheduling, scheduling information reporting, and/or priority handling between wireless devices via dynamic scheduling. Scheduling may be performed by a base station (e.g., the base station 220 at the MAC 222) for downlink/or and uplink. The MAC layers (e.g., MACs 212 and 222) may be configured to perform error correction(s) via Hybrid Automatic Repeat Request (HARQ) (e.g., one HARQ entity per carrier in case of Carrier Aggregation (CA)), priority handling between logical channels of the wireless device 210 via logical channel prioritization and/or padding. The MAC layers (e.g., MACs 212 and 222) may support one or more numerologies and/or transmission timings. Mapping restrictions in a logical channel prioritization may control which numerology and/or transmission timing a logical channel may use. The MAC layers (e.g., the MACs 212 and 222) may provide/configure logical channels 340 as a service to the RLC layers (e.g., the RLCs 213 and 223).
The PHY layers (e.g., PHYs 211 and 221) may perform mapping of transport channels to physical channels and/or digital and analog signal processing functions, for example, for sending and/or receiving information (e.g., via an over the air interface). The digital and/or analog signal processing functions may comprise, for example, coding/decoding and/or modulation/demodulation. The PHY layers (e.g., PHYs 211 and 221) may perform multi-antenna mapping. The PHY layers (e.g., the PHYs 211 and 221) may provide/configure one or more transport channels (e.g., transport channels 350) as a service to the MAC layers (e.g., the MACs 212 and 222, respectively).
The downlink data flow may begin, for example, if the SDAP 225 receives the three IP packets (or other quantity of IP packets) from one or more QoS flows and maps the three packets (or other quantity of packets) to radio bearers (e.g., radio bearers 402 and 404). The SDAP 225 may map the IP packets n and n+1 to a first radio bearer 402 and map the IP packet m to a second radio bearer 404. An SDAP header (labeled with “H” preceding each SDAP SDU shown in
Each protocol layer (e.g., protocol layers shown in
One or more MAC control elements (CEs) may be added to, or inserted into, the MAC PDU by a MAC layer, such as MAC 223 or MAC 222. As shown in
A logical channel may be defined by the type of information it carries. The set of logical channels (e.g., in an NR configuration) may comprise one or more channels described below. A paging control channel (PCCH) may comprise/carry one or more paging messages used to page a wireless device whose location is not known to the network on a cell level. A broadcast control channel (BCCH) may comprise/carry system information messages in the form of a master information block (MIB) and several system information blocks (SIBs). The system information messages may be used by wireless devices to obtain information about how a cell is configured and how to operate within the cell. A common control channel (CCCH) may comprise/carry control messages together with random access. A dedicated control channel (DCCH) may comprise/carry control messages to/from a specific wireless device to configure the wireless device with configuration information. A dedicated traffic channel (DTCH) may comprise/carry user data to/from a specific wireless device.
Transport channels may be used between the MAC and PHY layers. Transport channels may be defined by how the information they carry is sent/transmitted (e.g., via an over the air interface). The set of transport channels (e.g., that may be defined by an NR configuration or any other configuration) may comprise one or more of the following channels. A paging channel (PCH) may comprise/carry paging messages that originated from the PCCH. A broadcast channel (BCH) may comprise/carry the MIB from the BCCH. A downlink shared channel (DL-SCH) may comprise/carry downlink data and signaling messages, including the SIBs from the BCCH. An uplink shared channel (UL-SCH) may comprise/carry uplink data and signaling messages. A random access channel (RACH) may provide a wireless device with an access to the network without any prior scheduling.
The PHY layer may use physical channels to pass/transfer information between processing levels of the PHY layer. A physical channel may have an associated set of time-frequency resources for carrying the information of one or more transport channels. The PHY layer may generate control information to support the low-level operation of the PHY layer. The PHY layer may provide/transfer the control information to the lower levels of the PHY layer via physical control channels (e.g., referred to as L1/L2 control channels). The set of physical channels and physical control channels (e.g., that may be defined by an NR configuration or any other configuration) may comprise one or more of the following channels. A physical broadcast channel (PBCH) may comprise/carry the MIB from the BCH. A physical downlink shared channel (PDSCH) may comprise/carry downlink data and signaling messages from the DL-SCH, as well as paging messages from the PCH. A physical downlink control channel (PDCCH) may comprise/carry downlink control information (DCI), which may comprise downlink scheduling commands, uplink scheduling grants, and uplink power control commands. A physical uplink shared channel (PUSCH) may comprise/carry uplink data and signaling messages from the UL-SCH and in some instances uplink control information (UCI) as described below. A physical uplink control channel (PUCCH) may comprise/carry UCI, which may comprise HARQ acknowledgments, channel quality indicators (CQI), pre-coding matrix indicators (PMI), rank indicators (RI), and scheduling requests (SR). A physical random access channel (PRACH) may be used for random access.
The physical layer may generate physical signals to support the low-level operation of the physical layer, which may be similar to the physical control channels. As shown in
One or more of the channels (e.g., logical channels, transport channels, physical channels, etc.) may be used to carry out functions associated with the control plan protocol stack (e.g., NR control plane protocol stack).
The NAS protocols 217 and 237 may provide control plane functionality between the wireless device 210 and the AMF 230 (e.g., the AMF 158A or any other AMF) and/or, more generally, between the wireless device 210 and a CN (e.g., the CN 152 or any other CN). The NAS protocols 217 and 237 may provide control plane functionality between the wireless device 210 and the AMF 230 via signaling messages, referred to as NAS messages. There may be no direct path between the wireless device 210 and the AMF 230 via which the NAS messages may be transported. The NAS messages may be transported using the AS of the Uu and NG interfaces. The NAS protocols 217 and 237 may provide control plane functionality, such as authentication, security, a connection setup, mobility management, session management, and/or any other functionality.
The RRCs 216 and 226 may provide/configure control plane functionality between the wireless device 210 and the base station 220 and/or, more generally, between the wireless device 210 and the RAN (e.g., the base station 220). The RRC layers 216 and 226 may provide/configure control plane functionality between the wireless device 210 and the base station 220 via signaling messages, which may be referred to as RRC messages. The RRC messages may be sent/transmitted between the wireless device 210 and the RAN (e.g., the base station 220) using signaling radio bearers and the same/similar PDCP, RLC, MAC, and PHY protocol layers. The MAC layer may multiplex control-plane and user-plane data into the same TB. The RRC layers 216 and 226 may provide/configure control plane functionality, such as one or more of the following functionalities: broadcast of system information related to AS and NAS; paging initiated by the CN or the RAN; establishment, maintenance and release of an RRC connection between the wireless device 210 and the RAN (e.g., the base station 220); security functions including key management; establishment, configuration, maintenance and release of signaling radio bearers and data radio bearers; mobility functions; QoS management functions; wireless device measurement reporting (e.g., the wireless device measurement reporting) and control of the reporting; detection of and recovery from radio link failure (RLF); and/or NAS message transfer. As part of establishing an RRC connection, RRC layers 216 and 226 may establish an RRC context, which may involve configuring parameters for communication between the wireless device 210 and the RAN (e.g., the base station 220).
An RRC connection may be established for the wireless device. For example, this may be during an RRC connected state. During the RRC connected state (e.g., during the RRC connected 602), the wireless device may have an established RRC context and may have at least one RRC connection with a base station. The base station may be similar to one of the one or more base stations (e.g., one or more base stations of the RAN 104 shown in
An RRC context may not be established for the wireless device. For example, this may be during the RRC idle state. During the RRC idle state (e.g., the RRC idle 606), an RRC context may not be established for the wireless device. During the RRC idle state (e.g., the RRC idle 606), the wireless device may not have an RRC connection with the base station. During the RRC idle state (e.g., the RRC idle 606), the wireless device may be in a sleep state for the majority of the time (e.g., to conserve battery power). The wireless device may wake up periodically (e.g., once in every discontinuous reception (DRX) cycle) to monitor for paging messages (e.g., paging messages set from the RAN). Mobility of the wireless device may be managed by the wireless device via a procedure of a cell reselection. The RRC state may transition from the RRC idle state (e.g., the RRC idle 606) to the RRC connected state (e.g., the RRC connected 602) via a connection establishment procedure 612, which may involve a random access procedure.
A previously established RRC context may be maintained for the wireless device. For example, this may be during the RRC inactive state. During the RRC inactive state (e.g., the RRC inactive 604), the RRC context previously established may be maintained in the wireless device and the base station. The maintenance of the RRC context may enable/allow a fast transition to the RRC connected state (e.g., the RRC connected 602) with reduced signaling overhead as compared to the transition from the RRC idle state (e.g., the RRC idle 606) to the RRC connected state (e.g., the RRC connected 602). During the RRC inactive state (e.g., the RRC inactive 604), the wireless device may be in a sleep state and mobility of the wireless device may be managed/controlled by the wireless device via a cell reselection. The RRC state may transition from the RRC inactive state (e.g., the RRC inactive 604) to the RRC connected state (e.g., the RRC connected 602) via a connection resume procedure 614. The RRC state may transition from the RRC inactive state (e.g., the RRC inactive 604) to the RRC idle state (e.g., the RRC idle 606) via a connection release procedure 616 that may be the same as or similar to connection release procedure 608.
An RRC state may be associated with a mobility management mechanism. During the RRC idle state (e.g., RRC idle 606) and the RRC inactive state (e.g., the RRC inactive 604), mobility may be managed/controlled by the wireless device via a cell reselection. The purpose of mobility management during the RRC idle state (e.g., the RRC idle 606) or during the RRC inactive state (e.g., the RRC inactive 604) may be to enable/allow the network to be able to notify the wireless device of an event via a paging message without having to broadcast the paging message over the entire mobile communications network. The mobility management mechanism used during the RRC idle state (e.g., the RRC idle 606) or during the RRC idle state (e.g., the RRC inactive 604) may enable/allow the network to track the wireless device on a cell-group level, for example, so that the paging message may be broadcast over the cells of the cell group that the wireless device currently resides within (e.g. instead of sending the paging message over the entire mobile communication network). The mobility management mechanisms for the RRC idle state (e.g., the RRC idle 606) and the RRC inactive state (e.g., the RRC inactive 604) may track the wireless device on a cell-group level. The mobility management mechanisms may do the tracking, for example, using different granularities of grouping. There may be a plurality of levels of cell-grouping granularity (e.g., three levels of cell-grouping granularity: individual cells; cells within a RAN area identified by a RAN area identifier (RAI); and cells within a group of RAN areas, referred to as a tracking area and identified by a tracking area identifier (TAI)).
Tracking areas may be used to track the wireless device (e.g., tracking the location of the wireless device at the CN level). The CN (e.g., the CN 102, the 5G CN 152, or any other CN) may send to the wireless device a list of TAIs associated with a wireless device registration area (e.g., a UE registration area). A wireless device may perform a registration update with the CN to allow the CN to update the location of the wireless device and provide the wireless device with a new the UE registration area, for example, if the wireless device moves (e.g., via a cell reselection) to a cell associated with a TAI that may not be included in the list of TAIs associated with the UE registration area.
RAN areas may be used to track the wireless device (e.g., the location of the wireless device at the RAN level). For a wireless device in an RRC inactive state (e.g., the RRC inactive 604), the wireless device may be assigned/provided/configured with a RAN notification area. A RAN notification area may comprise one or more cell identities (e.g., a list of RAIs and/or a list of TAIs). A base station may belong to one or more RAN notification areas. A cell may belong to one or more RAN notification areas. A wireless device may perform a notification area update with the RAN to update the RAN notification area of the wireless device, for example, if the wireless device moves (e.g., via a cell reselection) to a cell not included in the RAN notification area assigned/provided/configured to the wireless device.
A base station storing an RRC context for a wireless device or a last serving base station of the wireless device may be referred to as an anchor base station. An anchor base station may maintain an RRC context for the wireless device at least during a period of time that the wireless device stays in a RAN notification area of the anchor base station and/or during a period of time that the wireless device stays in an RRC inactive state (e.g., RRC inactive 604).
A base station (e.g., gNBs 160 in
The physical signals and physical channels (e.g., described with respect to
The duration of a slot may depend on the numerology used for the OFDM symbols of the slot. A flexible numerology may be supported, for example, to accommodate different deployments (e.g., cells with carrier frequencies below 1 GHz up to cells with carrier frequencies in the mm-wave range). A flexible numerology may be supported, for example, in an NR configuration or any other radio configurations. A numerology may be defined in terms of subcarrier spacing and/or cyclic prefix duration. Subcarrier spacings may be scaled up by powers of two from a baseline subcarrier spacing of 15 kHz. Cyclic prefix durations may be scaled down by powers of two from a baseline cyclic prefix duration of 4.7 μs, for example, for a numerology in an NR configuration or any other radio configurations. Numerologies may be defined with the following subcarrier spacing/cyclic prefix duration combinations: 15 kHz/4.7 μs; 30 kHz/2.3 μs; 60 kHz/1.2 μs; 120 kHz/0.59 μs; 240 kHz/0.29 μs, and/or any other subcarrier spacing/cyclic prefix duration combinations.
A slot may have a fixed number/quantity of OFDM symbols (e.g., 14 OFDM symbols). A numerology with a higher subcarrier spacing may have a shorter slot duration and more slots per subframe. Examples of numerology-dependent slot duration and slots-per-subframe transmission structure are shown in
A single numerology may be used across the entire bandwidth of a carrier (e.g., an NR such as shown in
Configuration of one or more bandwidth parts (BWPs) may support one or more wireless devices not capable of receiving the full carrier bandwidth. BWPs may support bandwidth adaptation, for example, for such wireless devices not capable of receiving the full carrier bandwidth. A BWP (e.g., a BWP of an NR configuration) may be defined by a subset of contiguous RBs on a carrier. A wireless device may be configured (e.g., via an RRC layer) with one or more downlink BWPs per serving cell and one or more uplink BWPs per serving cell (e.g., up to four downlink BWPs per serving cell and up to four uplink BWPs per serving cell). One or more of the configured BWPs for a serving cell may be active, for example, at a given time. The one or more BWPs may be referred to as active BWPs of the serving cell. A serving cell may have one or more first active BWPs in the uplink carrier and one or more second active BWPs in the secondary uplink carrier, for example, if the serving cell is configured with a secondary uplink carrier.
A downlink BWP from a set of configured downlink BWPs may be linked with an uplink BWP from a set of configured uplink BWPs (e.g., for unpaired spectra). A downlink BWP and an uplink BWP may be linked, for example, if a downlink BWP index of the downlink BWP and an uplink BWP index of the uplink BWP are the same. A wireless device may expect that the center frequency for a downlink BWP is the same as the center frequency for an uplink BWP (e.g., for unpaired spectra).
A base station may configure a wireless device with one or more control resource sets (CORESETs) for at least one search space. The base station may configure the wireless device with one or more CORESETS, for example, for a downlink BWP in a set of configured downlink BWPs on a primary cell (PCell) or on a secondary cell (SCell). A search space may comprise a set of locations in the time and frequency domains where the wireless device may monitor/find/detect/identify control information. The search space may be a wireless device-specific search space (e.g., a UE-specific search space) or a common search space (e.g., potentially usable by a plurality of wireless devices or a group of wireless user devices). A base station may configure a group of wireless devices with a common search space, on a PCell or on a primary secondary cell (PSCell), in an active downlink BWP.
A base station may configure a wireless device with one or more resource sets for one or more PUCCH transmissions, for example, for an uplink BWP in a set of configured uplink BWPs. A wireless device may receive downlink receptions (e.g., PDCCH or PDSCH) in a downlink BWP, for example, according to a configured numerology (e.g., a configured subcarrier spacing and/or a configured cyclic prefix duration) for the downlink BWP. The wireless device may send/transmit uplink transmissions (e.g., PUCCH or PUSCH) in an uplink BWP, for example, according to a configured numerology (e.g., a configured subcarrier spacing and/or a configured cyclic prefix length for the uplink BWP).
One or more BWP indicator fields may be provided/comprised in Downlink Control Information (DCI). A value of a BWP indicator field may indicate which BWP in a set of configured BWPs is an active downlink BWP for one or more downlink receptions. The value of the one or more BWP indicator fields may indicate an active uplink BWP for one or more uplink transmissions.
A base station may semi-statically configure a wireless device with a default downlink BWP within a set of configured downlink BWPs associated with a PCell. A default downlink BWP may be an initial active downlink BWP, for example, if the base station does not provide/configure a default downlink BWP to/for the wireless device. The wireless device may determine which BWP is the initial active downlink BWP, for example, based on a CORESET configuration obtained using the PBCH.
A base station may configure a wireless device with a BWP inactivity timer value for a PCell. The wireless device may start or restart a BWP inactivity timer at any appropriate time. The wireless device may start or restart the BWP inactivity timer, for example, if one or more conditions are satisfied. The one or more conditions may comprise at least one of: the wireless device detects DCI indicating an active downlink BWP other than a default downlink BWP for a paired spectra operation; the wireless device detects DCI indicating an active downlink BWP other than a default downlink BWP for an unpaired spectra operation; and/or the wireless device detects DCI indicating an active uplink BWP other than a default uplink BWP for an unpaired spectra operation. The wireless device may start/run the BWP inactivity timer toward expiration (e.g., increment from zero to the BWP inactivity timer value, or decrement from the BWP inactivity timer value to zero), for example, if the wireless device does not detect DCI during a time interval (e.g., 1 ms or 0.5 ms). The wireless device may switch from the active downlink BWP to the default downlink BWP, for example, if the BWP inactivity timer expires.
A base station may semi-statically configure a wireless device with one or more BWPs. A wireless device may switch an active BWP from a first BWP to a second BWP, for example, based on (e.g., after or in response to) receiving DCI indicating the second BWP as an active BWP. A wireless device may switch an active BWP from a first BWP to a second BWP, for example, based on (e.g., after or in response to) an expiry of the BWP inactivity timer (e.g., if the second BWP is the default BWP).
A downlink BWP switching may refer to switching an active downlink BWP from a first downlink BWP to a second downlink BWP (e.g., the second downlink BWP is activated and the first downlink BWP is deactivated). An uplink BWP switching may refer to switching an active uplink BWP from a first uplink BWP to a second uplink BWP (e.g., the second uplink BWP is activated and the first uplink BWP is deactivated). Downlink and uplink BWP switching may be performed independently (e.g., in paired spectrum/spectra). Downlink and uplink BWP switching may be performed simultaneously (e.g., in unpaired spectrum/spectra). Switching between configured BWPs may occur, for example, based on RRC signaling, DCI signaling, expiration of a BWP inactivity timer, and/or an initiation of random access.
Wireless device procedures for switching BWPs on a secondary cell may be the same/similar as those on a primary cell, for example, if the wireless device is configured for a secondary cell with a default downlink BWP in a set of configured downlink BWPs and a timer value. The wireless device may use the timer value and the default downlink BWP for the secondary cell in the same/similar manner as the wireless device uses the timer value and/or default BWPs for a primary cell. The timer value (e.g., the BWP inactivity timer) may be configured per cell (e.g., for one or more BWPs), for example, via RRC signaling or any other signaling. One or more active BWPs may switch to another BWP, for example, based on an expiration of the BWP inactivity timer.
Two or more carriers may be aggregated and data may be simultaneously sent/transmitted to/from the same wireless device using carrier aggregation (CA) (e.g., to increase data rates). The aggregated carriers in CA may be referred to as component carriers (CCs). There may be a number/quantity of serving cells for the wireless device (e.g., one serving cell for a CC), for example, if CA is configured/used. The CCs may have multiple configurations in the frequency domain.
A network may set the maximum quantity of CCs that can be aggregated (e.g., up to 32 CCs may be aggregated in NR, or any other quantity may be aggregated in other systems). The aggregated CCs may have the same or different bandwidths, subcarrier spacing, and/or duplexing schemes (TDD, FDD, or any other duplexing schemes). A serving cell for a wireless device using CA may have a downlink CC. One or more uplink CCs may be optionally configured for a serving cell (e.g., for FDD). The ability to aggregate more downlink carriers than uplink carriers may be useful, for example, if the wireless device has more data traffic in the downlink than in the uplink.
One of the aggregated cells for a wireless device may be referred to as a primary cell (PCell), for example, if a CA is configured. The PCell may be the serving cell that the wireless initially connects to or access to, for example, during or at an RRC connection establishment, an RRC connection reestablishment, and/or a handover. The PCell may provide/configure the wireless device with NAS mobility information and the security input. Wireless device may have different PCells. For the downlink, the carrier corresponding to the PCell may be referred to as the downlink primary CC (DL PCC). For the uplink, the carrier corresponding to the PCell may be referred to as the uplink primary CC (UL PCC). The other aggregated cells (e.g., associated with CCs other than the DL PCC and UL PCC) for the wireless device may be referred to as secondary cells (SCells). The SCells may be configured, for example, after the PCell is configured for the wireless device. An SCell may be configured via an RRC connection reconfiguration procedure. For the downlink, the carrier corresponding to an SCell may be referred to as a downlink secondary CC (DL SCC). For the uplink, the carrier corresponding to the SCell may be referred to as the uplink secondary CC (UL SCC).
Configured SCells for a wireless device may be activated or deactivated, for example, based on traffic and channel conditions. Deactivation of an SCell may cause the wireless device to stop PDCCH and PDSCH reception on the SCell and PUSCH, SRS, and CQI transmissions on the SCell. Configured SCells may be activated or deactivated, for example, using a MAC CE (e.g., the MAC CE described with respect to
DCI may comprise control information, such as scheduling assignments and scheduling grants, for a cell. DCI may be sent/transmitted via the cell corresponding to the scheduling assignments and/or scheduling grants, which may be referred to as a self-scheduling. DCI comprising control information for a cell may be sent/transmitted via another cell, which may be referred to as a cross-carrier scheduling. Uplink control information (UCI) may comprise control information, such as HARQ acknowledgments and channel state feedback (e.g., CQI, PMI, and/or RI) for aggregated cells. UCI may be sent/transmitted via an uplink control channel (e.g., a PUCCH) of the PCell or a certain SCell (e.g., an SCell configured with PUCCH). For a larger number of aggregated downlink CCs, the PUCCH of the PCell may become overloaded. Cells may be divided into multiple PUCCH groups.
A PCell may comprise a downlink carrier (e.g., the PCell 1011) and an uplink carrier (e.g., the PCell 1021). An SCell may comprise only a downlink carrier. A cell, comprising a downlink carrier and optionally an uplink carrier, may be assigned with a physical cell ID and a cell index. The physical cell ID or the cell index may indicate/identify a downlink carrier and/or an uplink carrier of the cell, for example, depending on the context in which the physical cell ID is used. A physical cell ID may be determined, for example, using a synchronization signal (e.g., PSS and/or SSS) sent/transmitted via a downlink component carrier. A cell index may be determined, for example, using one or more RRC messages. A physical cell ID may be referred to as a carrier ID, and a cell index may be referred to as a carrier index. A first physical cell ID for a first downlink carrier may refer to the first physical cell ID for a cell comprising the first downlink carrier. Substantially the same/similar concept may apply to, for example, a carrier activation. Activation of a first carrier may refer to activation of a cell comprising the first carrier.
A multi-carrier nature of a PHY layer may be exposed/indicated to a MAC layer (e.g., in a CA configuration). A HARQ entity may operate on a serving cell. A transport block may be generated per assignment/grant per serving cell. A transport block and potential HARQ retransmissions of the transport block may be mapped to a serving cell.
For the downlink, a base station may send/transmit (e.g., unicast, multicast, and/or broadcast), to one or more wireless devices, one or more reference signals (RSs) (e.g., PSS, SSS, CSI-RS, DM-RS, and/or PT-RS). For the uplink, the one or more wireless devices may send/transmit one or more RSs to the base station (e.g., DM-RS, PT-RS, and/or SRS). The PSS and the SSS may be sent/transmitted by the base station and used by the one or more wireless devices to synchronize the one or more wireless devices with the base station. A synchronization signal (SS)/physical broadcast channel (PBCH) block may comprise the PSS, the SSS, and the PBCH. The base station may periodically send/transmit a burst of SS/PBCH blocks, which may be referred to as SSBs.
The SS/PBCH block may span one or more OFDM symbols in the time domain (e.g., 4 OFDM symbols, as shown in
The location of the SS/PBCH block in the time and frequency domains may not be known to the wireless device (e.g., if the wireless device is searching for the cell). The wireless device may monitor a carrier for the PSS, for example, to find and select the cell. The wireless device may monitor a frequency location within the carrier. The wireless device may search for the PSS at a different frequency location within the carrier, for example, if the PSS is not found after a certain duration (e.g., 20 ms). The wireless device may search for the PSS at a different frequency location within the carrier, for example, as indicated by a synchronization raster. The wireless device may determine the locations of the SSS and the PBCH, respectively, for example, based on a known structure of the SS/PBCH block if the PSS is found at a location in the time and frequency domains. The SS/PBCH block may be a cell-defining SS block (CD-SSB). A primary cell may be associated with a CD-SSB. The CD-SSB may be located on a synchronization raster. A cell selection/search and/or reselection may be based on the CD-SSB.
The SS/PBCH block may be used by the wireless device to determine one or more parameters of the cell. The wireless device may determine a physical cell identifier (PCI) of the cell, for example, based on the sequences of the PSS and the SSS, respectively. The wireless device may determine a location of a frame boundary of the cell, for example, based on the location of the SS/PBCH block. The SS/PBCH block may indicate that it has been sent/transmitted in accordance with a transmission pattern.
An SS/PBCH block in the transmission pattern may be a known distance from the frame boundary (e.g., a predefined distance for a RAN configuration among one or more networks, one or more base stations, and one or more wireless devices).
The PBCH may use a QPSK modulation and/or forward error correction (FEC). The FEC may use polar coding. One or more symbols spanned by the PBCH may comprise/carry one or more DM-RSs for demodulation of the PBCH. The PBCH may comprise an indication of a current system frame number (SFN) of the cell and/or a SS/PBCH block timing index. These parameters may facilitate time synchronization of the wireless device to the base station. The PBCH may comprise a MIB used to send/transmit to the wireless device one or more parameters. The MIB may be used by the wireless device to locate remaining minimum system information (RMSI) associated with the cell. The RMSI may comprise a System Information Block Type 1 (SIB1). The SIB1 may comprise information for the wireless device to access the cell.
The wireless device may use one or more parameters of the MIB to monitor a PDCCH, which may be used to schedule a PDSCH. The PDSCH may comprise the SIB1. The SIB1 may be decoded using parameters provided/comprised in the MIB. The PBCH may indicate an absence of SIB1. The wireless device may be pointed to a frequency, for example, based on the PBCH indicating the absence of SIB1. The wireless device may search for an SS/PBCH block at the frequency to which the wireless device is pointed.
The wireless device may assume that one or more SS/PBCH blocks sent/transmitted with a same SS/PBCH block index are quasi co-located (QCLed) (e.g., having substantially the same/similar Doppler spread, Doppler shift, average gain, average delay, and/or spatial Rx parameters). The wireless device may not assume QCL for SS/PBCH block transmissions having different SS/PBCH block indices. SS/PBCH blocks (e.g., those within a half-frame) may be sent/transmitted in spatial directions (e.g., using different beams that span a coverage area of the cell). A first SS/PBCH block may be sent/transmitted in a first spatial direction using a first beam, a second SS/PBCH block may be sent/transmitted in a second spatial direction using a second beam, a third SS/PBCH block may be sent/transmitted in a third spatial direction using a third beam, a fourth SS/PBCH block may be sent/transmitted in a fourth spatial direction using a fourth beam, etc.
A base station may send/transmit a plurality of SS/PBCH blocks, for example, within a frequency span of a carrier. A first PCI of a first SS/PBCH block of the plurality of SS/PBCH blocks may be different from a second PCI of a second SS/PBCH block of the plurality of SS/PBCH blocks. The PCIs of SS/PBCH blocks sent/transmitted in different frequency locations may be different or substantially the same.
The CSI-RS may be sent/transmitted by the base station and used by the wireless device to acquire/obtain/determine channel state information (CSI). The base station may configure the wireless device with one or more CSI-RSs for channel estimation or any other suitable purpose. The base station may configure a wireless device with one or more of the same/similar CSI-RSs. The wireless device may measure the one or more CSI-RSs. The wireless device may estimate a downlink channel state and/or generate a CSI report, for example, based on the measuring of the one or more downlink CSI-RSs. The wireless device may send/transmit the CSI report to the base station (e.g., based on periodic CSI reporting, semi-persistent CSI reporting, and/or aperiodic CSI reporting). The base station may use feedback provided by the wireless device (e.g., the estimated downlink channel state) to perform a link adaptation.
The base station may semi-statically configure the wireless device with one or more CSI-RS resource sets. A CSI-RS resource may be associated with a location in the time and frequency domains and a periodicity. The base station may selectively activate and/or deactivate a CSI-RS resource. The base station may indicate to the wireless device that a CSI-RS resource in the CSI-RS resource set is activated and/or deactivated.
The base station may configure the wireless device to report CSI measurements. The base station may configure the wireless device to provide CSI reports periodically, aperiodically, or semi-persistently. For periodic CSI reporting, the wireless device may be configured with a timing and/or periodicity of a plurality of CSI reports. For aperiodic CSI reporting, the base station may request a CSI report. The base station may command the wireless device to measure a configured CSI-RS resource and provide a CSI report relating to the measurement(s). For semi-persistent CSI reporting, the base station may configure the wireless device to send/transmit periodically, and selectively activate or deactivate the periodic reporting (e.g., via one or more activation/deactivation MAC CEs and/or one or more DCIs). The base station may configure the wireless device with a CSI-RS resource set and CSI reports, for example, using RRC signaling.
The CSI-RS configuration may comprise one or more parameters indicating, for example, up to 32 antenna ports (or any other quantity of antenna ports). The wireless device may be configured to use/employ the same OFDM symbols for a downlink CSI-RS and a CORESET, for example, if the downlink CSI-RS and CORESET are spatially QCLed and resource elements associated with the downlink CSI-RS are outside of the physical resource blocks (PRBs) configured for the CORESET. The wireless device may be configured to use/employ the same OFDM symbols for a downlink CSI-RS and SS/PBCH blocks, for example, if the downlink CSI-RS and SS/PBCH blocks are spatially QCLed and resource elements associated with the downlink CSI-RS are outside of PRBs configured for the SS/PBCH blocks.
Downlink DM-RSs may be sent/transmitted by a base station and received/used by a wireless device for a channel estimation. The downlink DM-RSs may be used for coherent demodulation of one or more downlink physical channels (e.g., PDSCH). A network (e.g., an NR network) may support one or more variable and/or configurable DM-RS patterns for data demodulation. At least one downlink DM-RS configuration may support a front-loaded DM-RS pattern. A front-loaded DM-RS may be mapped over one or more OFDM symbols (e.g., one or two adjacent OFDM symbols). A base station may semi-statically configure the wireless device with a number/quantity (e.g. a maximum number/quantity) of front-loaded DM-RS symbols for a PDSCH. A DM-RS configuration may support one or more DM-RS ports. A DM-RS configuration may support up to eight orthogonal downlink DM-RS ports per wireless device (e.g., for single user-MIMO). A DM-RS configuration may support up to 4 orthogonal downlink DM-RS ports per wireless device (e.g., for multiuser-MIMO). A radio network may support (e.g., at least for CP-OFDM) a common DM-RS structure for downlink and uplink. A DM-RS location, a DM-RS pattern, and/or a scrambling sequence may be the same or different. The base station may send/transmit a downlink DM-RS and a corresponding PDSCH, for example, using the same precoding matrix. The wireless device may use the one or more downlink DM-RSs for coherent demodulation/channel estimation of the PDSCH.
A transmitter (e.g., a transmitter of a base station) may use a precoder matrices for a part of a transmission bandwidth. The transmitter may use a first precoder matrix for a first bandwidth and a second precoder matrix for a second bandwidth. The first precoder matrix and the second precoder matrix may be different, for example, based on the first bandwidth being different from the second bandwidth. The wireless device may assume that a same precoding matrix is used across a set of PRBs. The set of PRBs may be determined/indicated/identified/denoted as a precoding resource block group (PRG).
A PDSCH may comprise one or more layers. The wireless device may assume that at least one symbol with DM-RS is present on a layer of the one or more layers of the PDSCH. A higher layer may configure one or more DM-RSs for a PDSCH (e.g., up to 3 DMRSs for the PDSCH). Downlink PT-RS may be sent/transmitted by a base station and used by a wireless device, for example, for a phase-noise compensation. Whether a downlink PT-RS is present or not may depend on an RRC configuration. The presence and/or the pattern of the downlink PT-RS may be configured on a wireless device-specific basis, for example, using a combination of RRC signaling and/or an association with one or more parameters used/employed for other purposes (e.g., modulation and coding scheme (MCS)), which may be indicated by DCI. A dynamic presence of a downlink PT-RS, if configured, may be associated with one or more DCI parameters comprising at least MCS. A network (e.g., an NR network) may support a plurality of PT-RS densities defined in the time and/or frequency domains. A frequency domain density (if configured/present) may be associated with at least one configuration of a scheduled bandwidth. The wireless device may assume a same precoding for a DM-RS port and a PT-RS port. The quantity/number of PT-RS ports may be fewer than the quantity/number of DM-RS ports in a scheduled resource. Downlink PT-RS may be configured/allocated/confined in the scheduled time/frequency duration for the wireless device. Downlink PT-RS may be sent/transmitted via symbols, for example, to facilitate a phase tracking at the receiver.
The wireless device may send/transmit an uplink DM-RS to a base station, for example, for a channel estimation. The base station may use the uplink DM-RS for coherent demodulation of one or more uplink physical channels. The wireless device may send/transmit an uplink DM-RS with a PUSCH and/or a PUCCH. The uplink DM-RS may span a range of frequencies that is similar to a range of frequencies associated with the corresponding physical channel. The base station may configure the wireless device with one or more uplink DM-RS configurations. At least one DM-RS configuration may support a front-loaded DM-RS pattern. The front-loaded DM-RS may be mapped over one or more OFDM symbols (e.g., one or two adjacent OFDM symbols). One or more uplink DM-RSs may be configured to send/transmit at one or more symbols of a PUSCH and/or a PUCCH. The base station may semi-statically configure the wireless device with a number/quantity (e.g., the maximum number/quantity) of front-loaded DM-RS symbols for the PUSCH and/or the PUCCH, which the wireless device may use to schedule a single-symbol DM-RS and/or a double-symbol DM-RS. A network (e.g., an NR network) may support (e.g., for cyclic prefix orthogonal frequency division multiplexing (CP-OFDM)) a common DM-RS structure for downlink and uplink. A DM-RS location, a DM-RS pattern, and/or a scrambling sequence for the DM-RS may be substantially the same or different.
A PUSCH may comprise one or more layers. A wireless device may send/transmit at least one symbol with DM-RS present on a layer of the one or more layers of the PUSCH. A higher layer may configure one or more DM-RSs (e.g., up to three DMRSs) for the PUSCH. Uplink PT-RS (which may be used by a base station for a phase tracking and/or a phase-noise compensation) may or may not be present, for example, depending on an RRC configuration of the wireless device. The presence and/or the pattern of an uplink PT-RS may be configured on a wireless device-specific basis (e.g., a UE-specific basis), for example, by a combination of RRC signaling and/or one or more parameters configured/employed for other purposes (e.g., MCS), which may be indicated by DCI. A dynamic presence of an uplink PT-RS, if configured, may be associated with one or more DCI parameters comprising at least MCS. A radio network may support a plurality of uplink PT-RS densities defined in time/frequency domain. A frequency domain density (if configured/present) may be associated with at least one configuration of a scheduled bandwidth. The wireless device may assume a same precoding for a DM-RS port and a PT-RS port. A quantity/number of PT-RS ports may be less than a quantity/number of DM-RS ports in a scheduled resource. An uplink PT-RS may be configured/allocated/confined in the scheduled time/frequency duration for the wireless device.
One or more SRSs may be sent/transmitted by a wireless device to a base station, for example, for a channel state estimation to support uplink channel dependent scheduling and/or a link adaptation. SRS sent/transmitted by the wireless device may enable/allow a base station to estimate an uplink channel state at one or more frequencies. A scheduler at the base station may use/employ the estimated uplink channel state to assign one or more resource blocks for an uplink PUSCH transmission for the wireless device. The base station may semi-statically configure the wireless device with one or more SRS resource sets. For an SRS resource set, the base station may configure the wireless device with one or more SRS resources. An SRS resource set applicability may be configured, for example, by a higher layer (e.g., RRC) parameter. An SRS resource in a SRS resource set of the one or more SRS resource sets (e.g., with the same/similar time domain behavior, periodic, aperiodic, and/or the like) may be sent/transmitted at a time instant (e.g., simultaneously), for example, if a higher layer parameter indicates beam management. The wireless device may send/transmit one or more SRS resources in SRS resource sets. A network (e.g., an NR network) may support aperiodic, periodic, and/or semi-persistent SRS transmissions. The wireless device may send/transmit SRS resources, for example, based on one or more trigger types. The one or more trigger types may comprise higher layer signaling (e.g., RRC) and/or one or more DCI formats. At least one DCI format may be used/employed for the wireless device to select at least one of one or more configured SRS resource sets. An SRS trigger type 0 may refer to an SRS triggered based on higher layer signaling. An SRS trigger type 1 may refer to an SRS triggered based on one or more DCI formats. The wireless device may be configured to send/transmit an SRS, for example, after a transmission of a PUSCH and a corresponding uplink DM-RS if a PUSCH and an SRS are sent/transmitted in a same slot. A base station may semi-statically configure a wireless device with one or more SRS configuration parameters indicating at least one of following: a SRS resource configuration identifier; a number of SRS ports; time domain behavior of an SRS resource configuration (e.g., an indication of periodic, semi-persistent, or aperiodic SRS); slot, mini-slot, and/or subframe level periodicity; an offset for a periodic and/or an aperiodic SRS resource; a number of OFDM symbols in an SRS resource; a starting OFDM symbol of an SRS resource; an SRS bandwidth; a frequency hopping bandwidth; a cyclic shift; and/or an SRS sequence ID.
An antenna port may be determined/defined such that the channel over which a symbol on the antenna port is conveyed can be inferred from the channel over which another symbol on the same antenna port is conveyed. The receiver may infer/determine the channel (e.g., fading gain, multipath delay, and/or the like) for conveying a second symbol on an antenna port, from the channel for conveying a first symbol on the antenna port, for example, if the first symbol and the second symbol are sent/transmitted on the same antenna port. A first antenna port and a second antenna port may be referred to as quasi co-located (QCLed), for example, if one or more large-scale properties of the channel over which a first symbol on the first antenna port is conveyed may be inferred from the channel over which a second symbol on a second antenna port is conveyed. The one or more large-scale properties may comprise at least one of: a delay spread; a Doppler spread; a Doppler shift; an average gain; an average delay; and/or spatial Receiving (Rx) parameters.
Channels that use beamforming may require beam management. Beam management may comprise a beam measurement, a beam selection, and/or a beam indication. A beam may be associated with one or more reference signals. A beam may be identified by one or more beamformed reference signals. The wireless device may perform a downlink beam measurement, for example, based on one or more downlink reference signals (e.g., a CSI-RS) and generate a beam measurement report. The wireless device may perform the downlink beam measurement procedure, for example, after an RRC connection is set up with a base station.
One or more beams may be configured for a wireless device in a wireless device-specific configuration. Three beams are shown in
CSI-RSs (e.g., CSI-RSs 1101, 1102, 1103) may be sent/transmitted by the base station and used by the wireless device for one or more measurements. The wireless device may measure an RSRP of configured CSI-RS resources. The base station may configure the wireless device with a reporting configuration, and the wireless device may report the RSRP measurements to a network (e.g., via one or more base stations) based on the reporting configuration. The base station may determine, based on the reported measurement results, one or more transmission configuration indication (TCI) states comprising a number of reference signals. The base station may indicate one or more TCI states to the wireless device (e.g., via RRC signaling, a MAC CE, and/or DCI). The wireless device may receive a downlink transmission with an Rx beam determined based on the one or more TCI states. The wireless device may or may not have a capability of beam correspondence. The wireless device may determine a spatial domain filter of a transmit (Tx) beam, for example, based on a spatial domain filter of the corresponding Rx beam, if the wireless device has the capability of beam correspondence. The wireless device may perform an uplink beam selection procedure to determine the spatial domain filter of the Tx beam, for example, if the wireless device does not have the capability of beam correspondence. The wireless device may perform the uplink beam selection procedure, for example, based on one or more sounding reference signal (SRS) resources configured to the wireless device by the base station. The base station may select and indicate uplink beams for the wireless device, for example, based on measurements of the one or more SRS resources sent/transmitted by the wireless device.
A wireless device may determine/assess (e.g., measure) a channel quality of one or more beam pair links, for example, in a beam management procedure. A beam pair link may comprise a Tx beam of a base station and an Rx beam of the wireless device. The Tx beam of the base station may send/transmit a downlink signal, and the Rx beam of the wireless device may receive the downlink signal. The wireless device may send/transmit a beam measurement report, for example, based on the assessment/determination. The beam measurement report may indicate one or more beam pair quality parameters comprising at least one of: one or more beam identifications (e.g., a beam index, a reference signal index, or the like), an RSRP, a precoding matrix indicator (PMI), a channel quality indicator (CQI), and/or a rank indicator (RI).
The wireless device may perform procedure P3 for an Rx beam determination, for example, by using the same Tx beam(s) of the base station and sweeping Rx beam(s) of the wireless device.
A wireless device may initiate/start/perform a beam failure recovery (BFR) procedure, for example, based on detecting a beam failure. The wireless device may send/transmit a BFR request (e.g., a preamble, UCI, an SR, a MAC CE, and/or the like), for example, based on the initiating the BFR procedure. The wireless device may detect the beam failure, for example, based on a determination that a quality of beam pair link(s) of an associated control channel is unsatisfactory (e.g., having an error rate higher than an error rate threshold, a received signal power lower than a received signal power threshold, an expiration of a timer, and/or the like).
The wireless device may measure a quality of a beam pair link, for example, using one or more reference signals (RSs) comprising one or more SS/PBCH blocks, one or more CSI-RS resources, and/or one or more DM-RSs. A quality of the beam pair link may be based on one or more of a block error rate (BLER), an RSRP value, a signal to interference plus noise ratio (SINR) value, an RSRQ value, and/or a CSI value measured on RS resources. The base station may indicate that an RS resource is QCLed with one or more DM-RSs of a channel (e.g., a control channel, a shared data channel, and/or the like). The RS resource and the one or more DM-RSs of the channel may be QCLed, for example, if the channel characteristics (e.g., Doppler shift, Doppler spread, an average delay, delay spread, a spatial Rx parameter, fading, and/or the like) from a transmission via the RS resource to the wireless device are similar or the same as the channel characteristics from a transmission via the channel to the wireless device.
A network (e.g., an NR network comprising a gNB and/or an ng-eNB) and/or the wireless device may initiate/start/perform a random access procedure. A wireless device in an RRC idle (e.g., an RRC_IDLE) state and/or an RRC inactive (e.g., an RRC_INACTIVE) state may initiate/perform the random access procedure to request a connection setup to a network. The wireless device may initiate/start/perform the random access procedure from an RRC connected (e.g., an RRC_CONNECTED) state. The wireless device may initiate/start/perform the random access procedure to request uplink resources (e.g., for uplink transmission of an SR if there is no PUCCH resource available) and/or acquire/obtain/determine an uplink timing (e.g., if an uplink synchronization status is non-synchronized). The wireless device may initiate/start/perform the random access procedure to request one or more system information blocks (SIBs) (e.g., other system information blocks, such as SIB2, SIB3, and/or the like). The wireless device may initiate/start/perform the random access procedure for a beam failure recovery request. A network may initiate/start/perform a random access procedure, for example, for a handover and/or for establishing time alignment for an SCell addition.
A base station may send/transmit a configuration message 1310 to a wireless device, for example, before initiating the random access procedure. The four-step random access procedure may comprise transmissions of four messages comprising: a first message (e.g., Msg 1 1311), a second message (e.g., Msg 2 1312), a third message (e.g., Msg 3 1313), and a fourth message (e.g., Msg 4 1314). The first message (e.g., Msg 1 1311) may comprise a preamble (or a random access preamble). The first message (e.g., Msg 1 1311) may be referred to as a preamble. The second message (e.g., Msg 2 1312) may comprise as a random access response (RAR). The second message (e.g., Msg 2 1312) may be referred to as an RAR.
The configuration message 1310 may be sent/transmitted, for example, using one or more RRC messages. The one or more RRC messages may indicate one or more random access channel (RACH) parameters to the wireless device. The one or more RACH parameters may comprise at least one of: general parameters for one or more random access procedures (e.g., RACH-configGeneral); cell-specific parameters (e.g., RACH-ConfigCommon); and/or dedicated parameters (e.g., RACH-configDedicated).
The base station may send/transmit (e.g., broadcast or multicast) the one or more RRC messages to one or more wireless devices. The one or more RRC messages may be wireless device-specific. The one or more RRC messages that are wireless device-specific may be, for example, dedicated RRC messages sent/transmitted to a wireless device in an RRC connected (e.g., an RRC_CONNECTED) state and/or in an RRC inactive (e.g., an RRC_INACTIVE) state. The wireless devices may determine, based on the one or more RACH parameters, a time-frequency resource and/or an uplink transmit power for transmission of the first message (e.g., Msg 1 1311) and/or the third message (e.g., Msg 3 1313). The wireless device may determine a reception timing and a downlink channel for receiving the second message (e.g., Msg 2 1312) and the fourth message (e.g., Msg 4 1314), for example, based on the one or more RACH parameters.
The one or more RACH parameters provided/configured/comprised in the configuration message 1310 may indicate one or more Physical RACH (PRACH) occasions available for transmission of the first message (e.g., Msg 1 1311). The one or more PRACH occasions may be predefined (e.g., by a network comprising one or more base stations). The one or more RACH parameters may indicate one or more available sets of one or more PRACH occasions (e.g., prach-ConfigIndex). The one or more RACH parameters may indicate an association between (a) one or more PRACH occasions and (b) one or more reference signals. The one or more RACH parameters may indicate an association between (a) one or more preambles and (b) one or more reference signals. The one or more reference signals may be SS/PBCH blocks and/or CSI-RSs. The one or more RACH parameters may indicate a quantity/number of SS/PBCH blocks mapped to a PRACH occasion and/or a quantity/number of preambles mapped to a SS/PBCH blocks.
The one or more RACH parameters provided/configured/comprised in the configuration message 1310 may be used to determine an uplink transmit power of first message (e.g., Msg 1 1311) and/or third message (e.g., Msg 3 1313). The one or more RACH parameters may indicate a reference power for a preamble transmission (e.g., a received target power and/or an initial power of the preamble transmission). There may be one or more power offsets indicated by the one or more RACH parameters. The one or more RACH parameters may indicate: a power ramping step; a power offset between SSB and CSI-RS; a power offset between transmissions of the first message (e.g., Msg 1 1311) and the third message (e.g., Msg 3 1313); and/or a power offset value between preamble groups. The one or more RACH parameters may indicate one or more thresholds, for example, based on which the wireless device may determine at least one reference signal (e.g., an SSB and/or CSI-RS) and/or an uplink carrier (e.g., a normal uplink (NUL) carrier and/or a supplemental uplink (SUL) carrier).
The first message (e.g., Msg 1 1311) may comprise one or more preamble transmissions (e.g., a preamble transmission and one or more preamble retransmissions). An RRC message may be used to configure one or more preamble groups (e.g., group A and/or group B). A preamble group may comprise one or more preambles. The wireless device may determine the preamble group, for example, based on a pathloss measurement and/or a size of the third message (e.g., Msg 3 1313). The wireless device may measure an RSRP of one or more reference signals (e.g., SSBs and/or CSI-RSs) and determine at least one reference signal having an RSRP above an RSRP threshold (e.g., rsrp-ThresholdSSB and/or rsrp-ThresholdCSI-RS). The wireless device may select at least one preamble associated with the one or more reference signals and/or a selected preamble group, for example, if the association between the one or more preambles and the at least one reference signal is configured by an RRC message.
The wireless device may determine the preamble, for example, based on the one or more RACH parameters provided/configured/comprised in the configuration message 1310. The wireless device may determine the preamble, for example, based on a pathloss measurement, an RSRP measurement, and/or a size of the third message (e.g., Msg 3 1313). The one or more RACH parameters may indicate: a preamble format; a maximum quantity/number of preamble transmissions; and/or one or more thresholds for determining one or more preamble groups (e.g., group A and group B). A base station may use the one or more RACH parameters to configure the wireless device with an association between one or more preambles and one or more reference signals (e.g., SSBs and/or CSI-RSs). The wireless device may determine the preamble to be comprised in first message (e.g., Msg 1 1311), for example, based on the association if the association is configured. The first message (e.g., Msg 1 1311) may be sent/transmitted to the base station via one or more PRACH occasions. The wireless device may use one or more reference signals (e.g., SSBs and/or CSI-RSs) for selection of the preamble and for determining of the PRACH occasion. One or more RACH parameters (e.g., ra-ssb-OccasionMskIndex and/or ra-OccasionList) may indicate an association between the PRACH occasions and the one or more reference signals.
The wireless device may perform a preamble retransmission, for example, if no response is received based on (e.g., after or in response to) a preamble transmission (e.g., for a period of time, such as a monitoring window for monitoring an RAR). The wireless device may increase an uplink transmit power for the preamble retransmission. The wireless device may select an initial preamble transmit power, for example, based on a pathloss measurement and/or a target received preamble power configured by the network. The wireless device may determine to resend/retransmit a preamble and may ramp up the uplink transmit power. The wireless device may receive one or more RACH parameters (e.g., PREAMBLE_POWER_RAMPING_STEP) indicating a ramping step for the preamble retransmission. The ramping step may be an amount of incremental increase in uplink transmit power for a retransmission. The wireless device may ramp up the uplink transmit power, for example, if the wireless device determines a reference signal (e.g., SSB and/or CSI-RS) that is the same as a previous preamble transmission. The wireless device may count the quantity/number of preamble transmissions and/or retransmissions, for example, using a counter parameter (e.g., PREAMBLE_TRANSMISSION_COUNTER). The wireless device may determine that a random access procedure has been completed unsuccessfully, for example, if the quantity/number of preamble transmissions exceeds a threshold configured by the one or more RACH parameters (e.g., preambleTransMax) without receiving a successful response (e.g., an RAR).
The second message (e.g., Msg 2 1312) (e.g., received by the wireless device) may comprise an RAR. The second message (e.g., Msg 2 1312) may comprise multiple RARs corresponding to multiple wireless devices. The second message (e.g., Msg 2 1312) may be received, for example, based on (e.g., after or in response to) the sending/transmitting of the first message (e.g., Msg 1 1311). The second message (e.g., Msg 2 1312) may be scheduled on the DL-SCH and may be indicated by a PDCCH, for example, using a random access radio network temporary identifier (RA RNTI). The second message (e.g., Msg 2 1312) may indicate that the first message (e.g., Msg 1 1311) was received by the base station. The second message (e.g., Msg 2 1312) may comprise a time-alignment command that may be used by the wireless device to adjust the transmission timing of the wireless device, a scheduling grant for transmission of the third message (e.g., Msg 3 1313), and/or a Temporary Cell RNTI (TC-RNTI). The wireless device may determine/start a time window (e.g., ra-ResponseWindow) to monitor a PDCCH for the second message (e.g., Msg 2 1312), for example, after sending/transmitting the first message (e.g., Msg 1 1311) (e.g., a preamble). The wireless device may determine the start time of the time window, for example, based on a PRACH occasion that the wireless device uses to send/transmit the first message (e.g., Msg 1 1311) (e.g., the preamble). The wireless device may start the time window one or more symbols after the last symbol of the first message (e.g., Msg 1 1311) comprising the preamble (e.g., the symbol in which the first message (e.g., Msg 1 1311) comprising the preamble transmission was completed or at a first PDCCH occasion from an end of a preamble transmission). The one or more symbols may be determined based on a numerology. The PDCCH may be mapped in a common search space (e.g., a Type1-PDCCH common search space) configured by an RRC message. The wireless device may identify/determine the RAR, for example, based on an RNTI. Radio network temporary identifiers (RNTIs) may be used depending on one or more events initiating/starting the random access procedure. The wireless device may use a RA-RNTI, for example, for one or more communications associated with random access or any other purpose. The RA-RNTI may be associated with PRACH occasions in which the wireless device sends/transmits a preamble. The wireless device may determine the RA-RNTI, for example, based on at least one of: an OFDM symbol index; a slot index; a frequency domain index; and/or a UL carrier indicator of the PRACH occasions. An example RA-RNTI may be determined as follows:
RA-RNTI=1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id
where s_id may be an index of a first OFDM symbol of the PRACH occasion (e.g., 0<s_id<14), t_id may be an index of a first slot of the PRACH occasion in a system frame (e.g., 0<t_id<80), f_id may be an index of the PRACH occasion in the frequency domain (e.g., 0<f_id<8), and ul_carrier_id may be a UL carrier used for a preamble transmission (e.g., 0 for an NUL carrier, and 1 for an SUL carrier).
The wireless device may send/transmit the third message (e.g., Msg 3 1313), for example, based on (e.g., after or in response to) a successful reception of the second message (e.g., Msg 2 1312) (e.g., using resources identified in the Msg 2 1312). The third message (e.g., Msg 3 1313) may be used, for example, for contention resolution in the contention-based random access procedure. A plurality of wireless devices may send/transmit the same preamble to a base station, and the base station may send/transmit an RAR that corresponds to a wireless device. Collisions may occur, for example, if the plurality of wireless device interpret the RAR as corresponding to themselves. Contention resolution (e.g., using the third message (e.g., Msg 3 1313) and the fourth message (e.g., Msg 4 1314)) may be used to increase the likelihood that the wireless device does not incorrectly use an identity of another the wireless device. The wireless device may comprise a device identifier in the third message (e.g., Msg 3 1313) (e.g., a C-RNTI if assigned, a TC RNTI comprised in the second message (e.g., Msg 2 1312), and/or any other suitable identifier), for example, to perform contention resolution.
The fourth message (e.g., Msg 4 1314) may be received, for example, based on (e.g., after or in response to) the sending/transmitting of the third message (e.g., Msg 3 1313). The base station may address the wireless on the PDCCH (e.g., the base station may send the PDCCH to the wireless device) using a C-RNTI, for example, If the C-RNTI was included in the third message (e.g., Msg 3 1313). The random access procedure may be determined to be successfully completed, for example, if the unique C RNTI of the wireless device is detected on the PDCCH (e.g., the PDCCH is scrambled by the C-RNTI). fourth message (e.g., Msg 4 1314) may be received using a DL-SCH associated with a TC RNTI, for example, if the TC RNTI is comprised in the third message (e.g., Msg 3 1313) (e.g., if the wireless device is in an RRC idle (e.g., an RRC_IDLE) state or not otherwise connected to the base station). The wireless device may determine that the contention resolution is successful and/or the wireless device may determine that the random access procedure is successfully completed, for example, if a MAC PDU is successfully decoded and a MAC PDU comprises the wireless device contention resolution identity MAC CE that matches or otherwise corresponds with the CCCH SDU sent/transmitted in third message (e.g., Msg 3 1313).
The wireless device may be configured with an SUL carrier and/or an NUL carrier. An initial access (e.g., random access) may be supported via an uplink carrier. A base station may configure the wireless device with multiple RACH configurations (e.g., two separate RACH configurations comprising: one for an SUL carrier and the other for an NUL carrier). For random access in a cell configured with an SUL carrier, the network may indicate which carrier to use (NUL or SUL). The wireless device may determine to use the SUL carrier, for example, if a measured quality of one or more reference signals (e.g., one or more reference signals associated with the NUL carrier) is lower than a broadcast threshold. Uplink transmissions of the random access procedure (e.g., the first message (e.g., Msg 1 1311) and/or the third message (e.g., Msg 3 1313)) may remain on, or may be performed via, the selected carrier. The wireless device may switch an uplink carrier during the random access procedure (e.g., between the Msg 1 1311 and the Msg 3 1313). The wireless device may determine and/or switch an uplink carrier for the first message (e.g., Msg 1 1311) and/or the third message (e.g., Msg 3 1313), for example, based on a channel clear assessment (e.g., a listen-before-talk).
The two-step (e.g., contention-free) random access procedure may be configured/initiated for a beam failure recovery, other SI request, an SCell addition, and/or a handover. A base station may indicate, or assign to, the wireless device a preamble to be used for the first message (e.g., Msg 1 1321). The wireless device may receive, from the base station via a PDCCH and/or an RRC, an indication of the preamble (e.g., ra-PreambleIndex).
The wireless device may start a time window (e.g., ra-ResponseWindow) to monitor a PDCCH for the RAR, for example, based on (e.g., after or in response to) sending/transmitting the preamble. The base station may configure the wireless device with one or more beam failure recovery parameters, such as a separate time window and/or a separate PDCCH in a search space indicated by an RRC message (e.g., recoverySearchSpaceId). The base station may configure the one or more beam failure recovery parameters, for example, in association with a beam failure recovery request. The separate time window for monitoring the PDCCH and/or an RAR may be configured to start after sending/transmitting a beam failure recovery request (e.g., the window may start any quantity of symbols and/or slots after sending/transmitting the beam failure recovery request). The wireless device may monitor for a PDCCH transmission addressed to a Cell RNTI (C-RNTI) on the search space. During the two-step (e.g., contention-free) random access procedure, the wireless device may determine that a random access procedure is successful, for example, based on (e.g., after or in response to) sending/transmitting first message (e.g., Msg 1 1321) and receiving a corresponding second message (e.g., Msg 2 1322). The wireless device may determine that a random access procedure has successfully been completed, for example, if a PDCCH transmission is addressed to a corresponding C-RNTI. The wireless device may determine that a random access procedure has successfully been completed, for example, if the wireless device receives an RAR comprising a preamble identifier corresponding to a preamble sent/transmitted by the wireless device and/or the RAR comprises a MAC sub-PDU with the preamble identifier. The wireless device may determine the response as an indication of an acknowledgement for an SI request.
Msg A 1320 may be sent/transmitted in an uplink transmission by the wireless device. Msg A 1320 may comprise one or more transmissions of a preamble 1341 and/or one or more transmissions of a transport block 1342. The transport block 1342 may comprise contents that are similar and/or equivalent to the contents of the third message (e.g., Msg 3 1313) (e.g., shown in
The wireless device may start/initiate the two-step random access procedure (e.g., the two-step random access procedure shown in
The wireless device may determine, based on two-step RACH parameters comprised in the configuration message 1330, a radio resource and/or an uplink transmit power for the preamble 1341 and/or the transport block 1342 (e.g., comprised in the first message (e.g., Msg A 1331)). The RACH parameters may indicate an MCS, a time-frequency resource, and/or a power control for the preamble 1341 and/or the transport block 1342. A time-frequency resource for transmission of the preamble 1341 (e.g., a PRACH) and a time-frequency resource for transmission of the transport block 1342 (e.g., a PUSCH) may be multiplexed using FDM, TDM, and/or CDM. The RACH parameters may enable the wireless device to determine a reception timing and a downlink channel for monitoring for and/or receiving second message (e.g., Msg B 1332).
The transport block 1342 may comprise data (e.g., delay-sensitive data), an identifier of the wireless device, security information, and/or device information (e.g., an International Mobile Subscriber Identity (IMSI)). The base station may send/transmit the second message (e.g., Msg B 1332) as a response to the first message (e.g., Msg A 1331). The second message (e.g., Msg B 1332) may comprise at least one of: a preamble identifier; a timing advance command; a power control command; an uplink grant (e.g., a radio resource assignment and/or an MCS); a wireless device identifier (e.g., a UE identifier for contention resolution); and/or an RNTI (e.g., a C-RNTI or a TC-RNTI). The wireless device may determine that the two-step random access procedure is successfully completed, for example, if a preamble identifier in the second message (e.g., Msg B 1332) corresponds to, or is matched to, a preamble sent/transmitted by the wireless device and/or the identifier of the wireless device in second message (e.g., Msg B 1332) corresponds to, or is matched to, the identifier of the wireless device in the first message (e.g., Msg A 1331) (e.g., the transport block 1342).
A wireless device and a base station may exchange control signaling (e.g., control information). The control signaling may be referred to as L1/L2 control signaling and may originate from the PHY layer (e.g., layer 1) and/or the MAC layer (e.g., layer 2) of the wireless device or the base station. The control signaling may comprise downlink control signaling sent/transmitted from the base station to the wireless device and/or uplink control signaling sent/transmitted from the wireless device to the base station.
The downlink control signaling may comprise at least one of: a downlink scheduling assignment; an uplink scheduling grant indicating uplink radio resources and/or a transport format; slot format information; a preemption indication; a power control command; and/or any other suitable signaling. The wireless device may receive the downlink control signaling in a payload sent/transmitted by the base station via a PDCCH. The payload sent/transmitted via the PDCCH may be referred to as downlink control information (DCI). The PDCCH may be a group common PDCCH (GC-PDCCH) that is common to a group of wireless devices. The GC-PDCCH may be scrambled by a group common RNTI.
A base station may attach one or more cyclic redundancy check (CRC) parity bits to DCI, for example, in order to facilitate detection of transmission errors. The base station may scramble the CRC parity bits with an identifier of a wireless device (or an identifier of a group of wireless devices), for example, if the DCI is intended for the wireless device (or the group of the wireless devices). Scrambling the CRC parity bits with the identifier may comprise Modulo-2 addition (or an exclusive-OR operation) of the identifier value and the CRC parity bits. The identifier may comprise a 16-bit value of an RNTI.
DCIs may be used for different purposes. A purpose may be indicated by the type of an RNTI used to scramble the CRC parity bits. DCI having CRC parity bits scrambled with a paging RNTI (P-RNTI) may indicate paging information and/or a system information change notification. The P-RNTI may be predefined as “FFFE” in hexadecimal. DCI having CRC parity bits scrambled with a system information RNTI (SI-RNTI) may indicate a broadcast transmission of the system information. The SI-RNTI may be predefined as “FFFF” in hexadecimal. DCI having CRC parity bits scrambled with a random access RNTI (RA-RNTI) may indicate a random access response (RAR). DCI having CRC parity bits scrambled with a cell RNTI (C-RNTI) may indicate a dynamically scheduled unicast transmission and/or a triggering of PDCCH-ordered random access. DCI having CRC parity bits scrambled with a temporary cell RNTI (TC-RNTI) may indicate a contention resolution (e.g., a Msg 3 analogous to the Msg 3 1313 shown in
A base station may send/transmit DCIs with one or more DCI formats, for example, depending on the purpose and/or content of the DCIs. DCI format 0_0 may be used for scheduling of a PUSCH in a cell. DCI format 0_0 may be a fallback DCI format (e.g., with compact DCI payloads). DCI format 0_1 may be used for scheduling of a PUSCH in a cell (e.g., with more DCI payloads than DCI format 0_0). DCI format 1_0 may be used for scheduling of a PDSCH in a cell. DCI format 1_0 may be a fallback DCI format (e.g., with compact DCI payloads). DCI format 11 may be used for scheduling of a PDSCH in a cell (e.g., with more DCI payloads than DCI format 1_0). DCI format 2_0 may be used for providing a slot format indication to a group of wireless devices. DCI format 21 may be used for informing/notifying a group of wireless devices of a physical resource block and/or an OFDM symbol where the group of wireless devices may assume no transmission is intended to the group of wireless devices. DCI format 2_2 may be used for transmission of a transmit power control (TPC) command for PUCCH or PUSCH. DCI format 2_3 may be used for transmission of a group of TPC commands for SRS transmissions by one or more wireless devices. DCI format(s) for new functions may be defined in future releases. DCI formats may have different DCI sizes, or may share the same DCI size.
The base station may process the DCI with channel coding (e.g., polar coding), rate matching, scrambling and/or QPSK modulation, for example, after scrambling the DCI with an RNTI. A base station may map the coded and modulated DCI on resource elements used and/or configured for a PDCCH. The base station may send/transmit the DCI via a PDCCH occupying a number of contiguous control channel elements (CCEs), for example, based on a payload size of the DCI and/or a coverage of the base station. The number of the contiguous CCEs (referred to as aggregation level) may be 1, 2, 4, 8, 16, and/or any other suitable number. A CCE may comprise a number (e.g., 6) of resource-element groups (REGs). A REG may comprise a resource block in an OFDM symbol. The mapping of the coded and modulated DCI on the resource elements may be based on mapping of CCEs and REGs (e.g., CCE-to-REG mapping).
The base station may send/transmit, to the wireless device, one or more RRC messages comprising configuration parameters of one or more CORESETs and one or more search space sets. The configuration parameters may indicate an association between a search space set and a CORESET. A search space set may comprise a set of PDCCH candidates formed by CCEs (e.g., at a given aggregation level). The configuration parameters may indicate at least one of: a number of PDCCH candidates to be monitored per aggregation level; a PDCCH monitoring periodicity and a PDCCH monitoring pattern; one or more DCI formats to be monitored by the wireless device; and/or whether a search space set is a common search space set or a wireless device-specific search space set (e.g., a UE-specific search space set). A set of CCEs in the common search space set may be predefined and known to the wireless device. A set of CCEs in the wireless device-specific search space set (e.g., the UE-specific search space set) may be configured, for example, based on the identity of the wireless device (e.g., C-RNTI).
As shown in
The may send/transmit uplink control signaling (e.g., UCI) to a base station. The uplink control signaling may comprise HARQ acknowledgements for received DL-SCH transport blocks. The wireless device may send/transmit the HARQ acknowledgements, for example, based on (e.g., after or in response to) receiving a DL-SCH transport block. Uplink control signaling may comprise CSI indicating a channel quality of a physical downlink channel. The wireless device may send/transmit the CSI to the base station. The base station, based on the received CSI, may determine transmission format parameters (e.g., comprising multi-antenna and beamforming schemes) for downlink transmission(s). Uplink control signaling may comprise scheduling requests (SR). The wireless device may send/transmit an SR indicating that uplink data is available for transmission to the base station. The wireless device may send/transmit UCI (e.g., HARQ acknowledgements (HARQ-ACK), CSI report, SR, and the like) via a PUCCH or a PUSCH. The wireless device may send/transmit the uplink control signaling via a PUCCH using one of several PUCCH formats.
There may be multiple PUCCH formats (e.g., five PUCCH formats). A wireless device may determine a PUCCH format, for example, based on a size of UCI (e.g., a quantity/number of uplink symbols of UCI transmission and a number of UCI bits). PUCCH format 0 may have a length of one or two OFDM symbols and may comprise two or fewer bits. The wireless device may send/transmit UCI via a PUCCH resource, for example, using PUCCH format 0 if the transmission is over/via one or two symbols and the quantity/number of HARQ-ACK information bits with positive or negative SR (HARQ-ACK/SR bits) is one or two. PUCCH format 1 may occupy a number of OFDM symbols (e.g., between four and fourteen OFDM symbols) and may comprise two or fewer bits. The wireless device may use PUCCH format 1, for example, if the transmission is over/via four or more symbols and the number of HARQ-ACK/SR bits is one or two. PUCCH format 2 may occupy one or two OFDM symbols and may comprise more than two bits. The wireless device may use PUCCH format 2, for example, if the transmission is over/via one or two symbols and the quantity/number of UCI bits is two or more. PUCCH format 3 may occupy a number of OFDM symbols (e.g., between four and fourteen OFDM symbols) and may comprise more than two bits. The wireless device may use PUCCH format 3, for example, if the transmission is four or more symbols, the quantity/number of UCI bits is two or more, and the PUCCH resource does not comprise an orthogonal cover code (OCC). PUCCH format 4 may occupy a number of OFDM symbols (e.g., between four and fourteen OFDM symbols) and may comprise more than two bits. The wireless device may use PUCCH format 4, for example, if the transmission is four or more symbols, the quantity/number of UCI bits is two or more, and the PUCCH resource comprises an OCC.
The base station may send/transmit configuration parameters to the wireless device for a plurality of PUCCH resource sets, for example, using an RRC message. The plurality of PUCCH resource sets (e.g., up to four sets in NR, or up to any other quantity of sets in other systems) may be configured on an uplink BWP of a cell. A PUCCH resource set may be configured with a PUCCH resource set index, a plurality of PUCCH resources with a PUCCH resource being identified by a PUCCH resource identifier (e.g., pucch-Resourceid), and/or a number (e.g. a maximum number) of UCI information bits the wireless device may send/transmit using one of the plurality of PUCCH resources in the PUCCH resource set. The wireless device may select one of the plurality of PUCCH resource sets, for example, based on a total bit length of the UCI information bits (e.g., HARQ-ACK, SR, and/or CSI) if configured with a plurality of PUCCH resource sets. The wireless device may select a first PUCCH resource set having a PUCCH resource set index equal to “0,” for example, if the total bit length of UCI information bits is two or fewer. The wireless device may select a second PUCCH resource set having a PUCCH resource set index equal to “1,” for example, if the total bit length of UCI information bits is greater than two and less than or equal to a first configured value. The wireless device may select a third PUCCH resource set having a PUCCH resource set index equal to “2,” for example, if the total bit length of UCI information bits is greater than the first configured value and less than or equal to a second configured value. The wireless device may select a fourth PUCCH resource set having a PUCCH resource set index equal to “3,” for example, if the total bit length of UCI information bits is greater than the second configured value and less than or equal to a third value (e.g., 1406, 1706, or any other quantity of bits).
The wireless device may determine a PUCCH resource from the PUCCH resource set for UCI (HARQ-ACK, CSI, and/or SR) transmission, for example, after determining a PUCCH resource set from a plurality of PUCCH resource sets. The wireless device may determine the PUCCH resource, for example, based on a PUCCH resource indicator in DCI (e.g., with DCI format 1_0 or DCI for 1_1) received on/via a PDCCH. An n-bit (e.g., a three-bit) PUCCH resource indicator in the DCI may indicate one of multiple (e.g., eight) PUCCH resources in the PUCCH resource set. The wireless device may send/transmit the UCI (HARQ-ACK, CSI and/or SR) using a PUCCH resource indicated by the PUCCH resource indicator in the DCI, for example, based on the PUCCH resource indicator.
The base station 1504 may connect the wireless device 1502 to a core network (not shown) via radio communications over the air interface (or radio interface) 1506. The communication direction from the base station 1504 to the wireless device 1502 over the air interface 1506 may be referred to as the downlink. The communication direction from the wireless device 1502 to the base station 1504 over the air interface may be referred to as the uplink. Downlink transmissions may be separated from uplink transmissions, for example, using various duplex schemes (e.g., FDD, TDD, and/or some combination of the duplexing techniques).
For the downlink, data to be sent to the wireless device 1502 from the base station 1504 may be provided/transferred/sent to the processing system 1508 of the base station 1504. The data may be provided/transferred/sent to the processing system 1508 by, for example, a core network. For the uplink, data to be sent to the base station 1504 from the wireless device 1502 may be provided/transferred/sent to the processing system 1518 of the wireless device 1502. The processing system 1508 and the processing system 1518 may implement layer 3 and layer 2 OSI functionality to process the data for transmission. Layer 2 may comprise an SDAP layer, a PDCP layer, an RLC layer, and a MAC layer, for example, described with respect to
The data to be sent to the wireless device 1502 may be provided/transferred/sent to a transmission processing system 1510 of base station 1504, for example, after being processed by the processing system 1508. The data to be sent to base station 1504 may be provided/transferred/sent to a transmission processing system 1520 of the wireless device 1502, for example, after being processed by the processing system 1518. The transmission processing system 1510 and the transmission processing system 1520 may implement layer 1 OSI functionality. Layer 1 may comprise a PHY layer, for example, described with respect to
A reception processing system 1512 of the base station 1504 may receive the uplink transmission from the wireless device 1502. The reception processing system 1512 of the base station 1504 may comprise one or more TRPs. A reception processing system 1522 of the wireless device 1502 may receive the downlink transmission from the base station 1504. The reception processing system 1522 of the wireless device 1502 may comprise one or more antenna panels. The reception processing system 1512 and the reception processing system 1522 may implement layer 1 OSI functionality. Layer 1 may include a PHY layer, for example, described with respect to
The base station 1504 may comprise multiple antennas (e.g., multiple antenna panels, multiple TRPs, etc.). The wireless device 1502 may comprise multiple antennas (e.g., multiple antenna panels, etc.). The multiple antennas may be used to perform one or more MIMO or multi-antenna techniques, such as spatial multiplexing (e.g., single-user MIMO or multi-user MIMO), transmit/receive diversity, and/or beamforming. The wireless device 1502 and/or the base station 1504 may have a single antenna.
The processing system 1508 and the processing system 1518 may be associated with a memory 1514 and a memory 1524, respectively. Memory 1514 and memory 1524 (e.g., one or more non-transitory computer readable mediums) may store computer program instructions or code that may be executed by the processing system 1508 and/or the processing system 1518, respectively, to carry out one or more of the functionalities (e.g., one or more functionalities described herein and other functionalities of general computers, processors, memories, and/or other peripherals). The transmission processing system 1510 and/or the reception processing system 1512 may be coupled to the memory 1514 and/or another memory (e.g., one or more non-transitory computer readable mediums) storing computer program instructions or code that may be executed to carry out one or more of their respective functionalities. The transmission processing system 1520 and/or the reception processing system 1522 may be coupled to the memory 1524 and/or another memory (e.g., one or more non-transitory computer readable mediums) storing computer program instructions or code that may be executed to carry out one or more of their respective functionalities.
The processing system 1508 and/or the processing system 1518 may comprise one or more controllers and/or one or more processors. The one or more controllers and/or one or more processors may comprise, for example, a general-purpose processor, a digital signal processor (DSP), a microcontroller, an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) and/or other programmable logic device, discrete gate and/or transistor logic, discrete hardware components, an on-board unit, or any combination thereof. The processing system 1508 and/or the processing system 1518 may perform at least one of signal coding/processing, data processing, power control, input/output processing, and/or any other functionality that may enable the wireless device 1502 and/or the base station 1504 to operate in a wireless environment.
The processing system 1508 may be connected to one or more peripherals 1516. The processing system 1518 may be connected to one or more peripherals 1526. The one or more peripherals 1516 and the one or more peripherals 1526 may comprise software and/or hardware that provide features and/or functionalities, for example, a speaker, a microphone, a keypad, a display, a touchpad, a power source, a satellite transceiver, a universal serial bus (USB) port, a hands-free headset, a frequency modulated (FM) radio unit, a media player, an Internet browser, an electronic control unit (e.g., for a motor vehicle), and/or one or more sensors (e.g., an accelerometer, a gyroscope, a temperature sensor, a radar sensor, a lidar sensor, an ultrasonic sensor, a light sensor, a camera, and/or the like). The processing system 1508 and/or the processing system 1518 may receive input data (e.g., user input data) from, and/or provide output data (e.g., user output data) to, the one or more peripherals 1516 and/or the one or more peripherals 1526. The processing system 1518 in the wireless device 1502 may receive power from a power source and/or may be configured to distribute the power to the other components in the wireless device 1502. The power source may comprise one or more sources of power, for example, a battery, a solar cell, a fuel cell, or any combination thereof. The processing system 1508 may be connected to a Global Positioning System (GPS) chipset 1517. The processing system 1518 may be connected to a Global Positioning System (GPS) chipset 1527. The GPS chipset 1517 and the GPS chipset 1527 may be configured to determine and provide geographic location information of the wireless device 1502 and the base station 1504, respectively.
The example in
A wireless device may receive, from a base station, one or more messages (e.g. RRC messages) comprising configuration parameters of a plurality of cells (e.g., a primary cell, one or more secondary cells). The wireless device may communicate with at least one base station (e.g., two or more base stations in dual-connectivity) via the plurality of cells. The one or more messages (e.g. as a part of the configuration parameters) may comprise parameters of PHY, MAC, RLC, PCDP, SDAP, RRC layers for configuring the wireless device. The configuration parameters may comprise parameters for configuring PHY and MAC layer channels, bearers, etc. The configuration parameters may comprise parameters indicating values of timers for PHY, MAC, RLC, PCDP, SDAP, RRC layers, and/or communication channels.
A timer may begin running, for example, once it is started and continue running until it is stopped or until it expires. A timer may be started, for example, if it is not running or restarted if it is running. A timer may be associated with a value (e.g., the timer may be started or restarted from a value or may be started from zero and expire once it reaches the value). The duration of a timer may not be updated, for example, until the timer is stopped or expires (e.g., due to BWP switching). A timer may be used to measure a time period/window for a process. With respect to an implementation and/or procedure related to one or more timers or other parameters, it will be understood that there may be multiple ways to implement the one or more timers or other parameters. One or more of the multiple ways to implement a timer may be used to measure a time period/window for the procedure. A random access response window timer may be used for measuring a window of time for receiving a random access response. The time difference between two time stamps may be used, for example, instead of starting a random access response window timer and determine the expiration of the timer. A process for measuring a time window may be restarted, for example, if a timer is restarted. Other example implementations may be configured/provided to restart a measurement of a time window.
A wireless device may communicate with a node (e.g., a TRP) of a base station. The wireless device may active a TCI state to communicate with the TRP. The TCI state may indicate parameters applied to the communication between the wireless device and the TRP. In at least some wireless communications, a wireless device may communicate with a single TRP of a base station. The wireless device may activate a single TCI state. The wireless device may send (e.g., transmit) uplink signals (e.g., PUCCH/PUSCH/SRS transmissions), for example, based on the TCI state. The wireless device may receive downlink signals (e.g., PDCCH, PDSCH, CSI-RS receptions), for example, based on the TCI state. For convenience, discussion below may use uplink signals, uplink BWP, and/or uplink transmission power as examples. It is appreciated that a TCI state may be used for receiving downlink signals, for example, via downlink BWPs. It is appreciated that a power control set may indicate downlink reception power.
In at least some wireless communications, a wireless device may be served by multiple nodes such as multiple TRPs (e.g., a first TRP and a second TRP). At least two TCI states (e.g., a first TCI state and a second TCI state) may be activated, for example, to support multiple TRPs. The wireless device may send (e.g., transmit), to the first TRP, first uplink signals (e.g., PUCCH/PUSCH/SRS transmissions), for example, based on the first TCI state. The wireless device may receive, via/from the first TRP, first downlink signals (e.g., PDCCH, PDSCH, CSI-RS receptions), for example, based on the first TCI state. The wireless device may send (e.g., transmit), to the second TRP, second uplink signals (e.g., PUCCH/PUSCH/SRS transmissions), for example, based on the second TCI state. The wireless device may receive, via/from the second TRP, second downlink signals (e.g., PDCCH, PDSCH, CSI-RS receptions), for example, based on the second TCI state.
However, the base station may configure a large quantity of TCI states. The base station may not configure a power control set for each TCI state. Instead, the base station may configure a power control set for a communication resource (such as a BWP). The wireless device may determine transmission powers of the first uplink transmissions and the second uplink transmissions based on the single uplink power control set configured/indicated for an uplink BWP, for example, if no uplink power control set is indicated/configured for the first TCI state and/or the second TCI state. However, different TRPs may be located in different places and/or subject to different channel conditions (e.g., pathloss, obstacles, reflections, etc.). A default transmission (and/or reception) power that may be used for a first TRP may not be optimal for a second (or other) TRP. Using the same transmission power for uplink transmissions of/to/towards multiple TRPs may be inefficient and/or may increase interference to other cells and/or the wireless devices. As described herein, different transmission power of/to/towards multiple TRPs may be used for improved wireless communications.
As described herein, at least two uplink power control sets may be indicated/configured for an uplink BWP. The uplink BWP may be associated with a cell. Two uplink power control sets may be sufficient for an intra-cell multi-TRP operation. More than two uplink power control sets may be used for an inter-cell multi-TRP operation. At least two TCI states may be activated for a wireless device. An association between the at least two power control sets and the at least two TCI states may be established, based on a variety of ways as described herein. The wireless device may send a first uplink signal/transmission, to a first TRP, using a first transmission power. The first transmission power may be determined based on the first TCI state. The first transmission power may be determined based on a first power control set of the at least two power control sets, for example, if no power control set is indicated/configured for the first TCI state. As described herein, the wireless device may use the first power control set based on an association between the first power control set and the first TCI state.
A maximum quantity/number of non-serving cells (e.g., 7, 10) may be indicated (e.g., by one or more configuration parameters). A base station may dynamically (e.g., using DCI, MAC-CE) activate one or more of the non-serving cells, for example, based on a location/mobility of the wireless device. The non-serving cells may not be co-located and/or may be subject to different channel conditions. The one or more configuration parameters may indicate, for each non-serving cell of the non-serving cells, a respective (e.g., uplink) power control set. The wireless device may select/determine, based on the (active) non-serving cell, an uplink power control set to determine/calculate transmission powers for communicating with the non-serving cell. One or more TCI states, of the at least two TCI state, may be associated with one or more non-serving cells (e.g., one or more active non-serving cells). The wireless device may select/determine the uplink power control set corresponding to the non-serving cell, for example, based on no power control set is indicated for the TCI state associated with the non-serving cell. In this way, different transmission power may be used when communicating with different TRPs, if the wireless device is served by multiple-TRPs (e.g., intra-cell multi-TRP and/or inter-cell multi-TRP operation). The transmission power may be optimized to fit each TRP. Advantages may result such as reduced interference and/or improved transmission accuracy.
In at least some wireless communications, a wireless device may receive DCI indicating switching from multiple TCI states to a single TCI state. The wireless device may switch from multiple TCI states to a single TCI states, for example, if a base station switches from a multiple-TRPs mode to a single TRP mode. the base station and the wireless device may not be aligned on the uplink power control set, for example, if a power control set is not indicated/configured for the single TCI state and at least two power control sets are indicated/configured for a BWP. For example, the wireless device may send an uplink signal based on a first power control set of the at least two power control sets. The base station may receive the uplink signal based on a second power control set of the at least two power control sets. This lack of alignment may result in inaccurate uplink power control and/or may lead to increased interference.
As described herein, a base station and a wireless device may be aligned with a selection of a default uplink power control set. For example, based on an agreed rule, the wireless device may select, from the at least two uplink power control sets configured for the uplink BWP, the first power control set (e.g., as a default power control set) to send an uplink signal. Based on the agreed rule, the base station may select, from the at least two uplink power control sets, the first power control set to receive the uplink signal. This alignment may result in advantages such as accurate power control and/or reduced interference.
In at least some wireless communications, a wireless device may receive DCI scheduling reception of a downlink signal (e.g., PDSCH reception, aperiodic CSI-RS), for example, while at least two TCI states are activated. A time offset between the DCI and the downlink signal may be less than a threshold. The wireless device may use a TCI state among the at least two TCI states, to receive the downlink signal, for example, if the time offset is less than the threshold. The TCI state used by the wireless device to receive the downlink signal may be different from the one used by the base station to send the downlink signal, for example, if the TCI state used by the wireless device is not known by the base station. Beam misalignment may be caused. The wireless device may not decode the downlink signal correctly. Error rates may be increased. The wireless device may not measure a radio link quality of the downlink signal accurately, leading to inaccurate channel estimation and/or scheduling decisions.
As described herein, a wireless device may select, based on an agreed rule, the first TCI state to receive a downlink signal, if a time offset, between DCI and a downlink signal scheduled by the DCI, is less than a threshold. For example, the wireless device may select the first TCI state based on the first TCI state is associated with the PCI of a serving cell. In another example, the wireless device may select the first TCI state based on a second TCI state, among the at least two TCI states, being associated with a second PCI that is different from the PCI of the serving cell. In another example, the wireless device may buffer the downlink signal based on each of the at least two TCI states. The wireless device may select the first TCI state, based on the first TCI state is indicated by the DCI scheduling reception of the downlink signal. The wireless device may receive (e.g., decode) the buffered downlink signal based on the selected TCI state. In another example, the one or more configuration parameters may comprise a field that indicates the first (default) TCI state. The wireless device may receive the downlink signal based on the first TCI state, of the at least two TCI states, based on the value in the field indicates the first TCI.
In this way, a likelihood of beam misalignment, between the base station and the wireless device on the (default) TCI state used to receive the downlink signal, may be reduced. Advantages may result. For example, the wireless device may decode the downlink signal correctly leading to reduced error rates. In another example, the wireless device may measure an accurate radio link quality of the downlink signal leading to accurate channel estimation and/or scheduling decisions.
A wireless device 1701 may receive one or more messages 1710 (e.g., at time TO). The wireless device 1701 may receive the one or more messages 1710 from a computing device 1702, which may comprise any computing device described herein (e.g., base station, relay node, wireless device, etc.). For example, the wireless device 1701 may receive the one or more messages 1710 from a base station. The wireless device 1701 may receive the one or more messages 1710 from a relay node. The wireless device 1701 may receive the one or more messages 1710 from another wireless device (e.g., TRP, vehicle, remote radio head, and the like). The one or more messages 1710 may comprise one or more configuration parameters (e.g., Configuration parameters at time TO in
One or more configuration parameters may be for one or more cells. The one or more cells may comprise a cell. The cell may be, for example, a serving cell. At least one configuration parameter of the one or more configuration parameters may be for the cell. The cell may be a primary cell (PCell). The cell may be a secondary cell (SCell). The cell may be a secondary cell configured for/with a PUCCH (e.g., PUCCH SCell). The cell may be an unlicensed cell, for example, operating in an unlicensed band. The cell may be a licensed cell, for example, operating in a licensed band. The cell may operate in a first frequency range (FR1). The FR1 may comprise, for example, frequency bands below 6 GHz (or any other frequency or range of frequencies). The cell may operate in a second frequency range (FR2). The FR2 may comprise, for example, frequency bands from 24 GHz to 52.6 GHz (or any other frequency or range of frequencies). The cell may operate in a third frequency range (FR3). The FR3 may comprise, for example, frequency bands from 52.6 GHz to 71 GHz (or any other frequency or range of frequencies). The FR3 may comprise, for example, frequency bands starting from (or above) 52.6 GHz (or any other frequency).
A wireless device may perform uplink transmissions (e.g., PUSCH, PUCCH, SRS) via/of the cell in a first time and in a first frequency. The wireless device may perform downlink receptions (e.g., PDCCH, PDSCH) via/of the cell in a second time and in a second frequency. The cell may operate in a time-division duplex (TDD) mode. The first frequency and the second frequency may be the same, for example, in the TDD mode. The first time and the second time may be different, for example, in the TDD mode. The cell may operate in a frequency-division duplex (FDD) mode. The first frequency and the second frequency may be different, for example, in the FDD mode. The first time and the second time may be the same, for example, in the FDD mode. The cell may operate in a code-division multiplex (CDM) mode, for example, in which the first frequency and the second frequency may be the same or different, and or in which the first time and the second time may be the same or different. The cell may operate in a spatial-domain multiplex (SDM) mode, for example, in which the first frequency and the second frequency may be the same or different, and or in which the first time and the second time may be the same or different. The cell may operation in one or more of a TDD mode, an FDD mode, a CDM mode, and/or an SDM mode.
A wireless device may be an RRC mode of a plurality of RRC modes. For example, the wireless device may be in an RRC connected mode. The wireless device may be in an RRC idle mode. The wireless device may be in an RRC inactive mode.
A cell may comprise a plurality of BWPs. The plurality of BWPs may comprise one or more uplink BWPs comprising an uplink BWP of the cell. The plurality of BWPs may comprise one or more downlink BWPs comprising a downlink BWP of the cell.
A BWP of the plurality of BWPs may be in one of an active state and an inactive state. In the active state of a downlink BWP of the one or more downlink BWPs, the wireless device may monitor a downlink channel/signal (e.g., PDCCH, DCI, CSI-RS, PDSCH) on/for/via the downlink BWP. In the active state of a downlink BWP of the one or more downlink BWPs, the wireless device may receive a PDSCH on/via/for the downlink BWP. In the inactive state of a downlink BWP of the one or more downlink BWPs, the wireless device may not monitor a downlink channel/signal (e.g., PDCCH, DCI, CSI-RS, PDSCH) on/via/for the downlink BWP. In the inactive state of a downlink BWP of the one or more downlink BWPs, the wireless device may stop monitoring (or receiving) a downlink channel/signal (e.g., PDCCH, DCI, CSI-RS, PDSCH) on/via/for the downlink BWP. In the inactive state of a downlink BWP of the one or more downlink BWPs, the wireless device may not receive a PDSCH on/via/for the downlink BWP. In the inactive state of a downlink BWP of the one or more downlink BWPs, the wireless device may stop receiving a PDSCH on/via/for the downlink BWP.
In the active state of an uplink BWP of the one or more uplink BWPs, the wireless device may send (e.g., transmit) an uplink signal/channel (e.g., PUCCH, preamble, PUSCH, PRACH, SRS, etc.) on/via the uplink BWP. In the inactive state of an uplink BWP of the one or more uplink BWPs, the wireless device may not send (e.g., transmit) an uplink signal/channel (e.g., PUCCH, preamble, PUSCH, PRACH, SRS, etc.) on/via the uplink BWP.
A wireless device may activate the downlink BWP of the one or more downlink BWPs of the cell. Activating the downlink BWP may comprise setting (or switching to) the downlink BWP as an active downlink BWP of the cell. Activating the downlink BWP may comprise setting the downlink BWP in the active state. Activating the downlink BWP may comprise switching the downlink BWP from the inactive state to the active state.
A wireless device may activate the uplink BWP of the one or more uplink BWPs of the cell. Activating the uplink BWP may comprise that the wireless device sets (or switches to) the uplink BWP as an active uplink BWP of the cell. Activating the uplink BWP may comprise setting the uplink BWP in the active state. Activating the uplink BWP may comprise switching the uplink BWP from the inactive state to the active state.
One or more configuration parameters may be for the (active) downlink BWP of the cell. At least one configuration parameter of the one or more configuration parameters may be for the downlink BWP of the cell.
One or more configuration parameters may be for the (active) uplink BWP of the cell. At least one configuration parameter of the one or more configuration parameters may be for the uplink BWP of the cell. The one or more configuration parameters may indicate a subcarrier spacing (or a numerology) for the downlink BWP. The one or more configuration parameters may indicate a subcarrier spacing (or a numerology) for the uplink BWP.
A value of the subcarrier spacing (of the downlink BWP and/or the uplink BWP) may be/indicate, for example, 15 kHz (μ=0), or any other frequency or range of frequencies. A value of the subcarrier spacing may be/indicate, for example, 30 kHz (μ=1). A value of the subcarrier spacing may be/indicate, for example, 60 kHz (μ=2). A value of the subcarrier spacing may be/indicate, for example, 120 kHz (μ=3). A value of the subcarrier spacing may be/indicate, for example, 240 kHz (μ=4). A value of the subcarrier spacing may be/indicate, for example, 480 kHz (μ=5). A value of the subcarrier spacing may be/indicate, for example, 960 kHz (μ=6). For example, 480 kHz may be valid/applicable in FR3. For example, 960 kHz may be valid/applicable in FR3. For example, 240 kHz may be valid/applicable in FR3. For example, 120 kHz may be valid/applicable in FR3. Any frequency or range of frequencies may be valid/applicable to any FR(n) (e.g., μ may be equal to any value).
One or more configuration parameters may indicate a plurality of control resource sets (CORESETS). The one or more configuration parameters may indicate the plurality of CORESETS for the (active) downlink BWP of the cell. The (active) downlink BWP may comprise the plurality of CORESETS.
One or more configuration parameters may indicate a plurality of CORESET indexes/identifiers/indicators (e.g., provided by a higher layer parameter ControlResourceSetId) for the plurality of CORESETS. Each CORESET of the plurality of CORESETS may be identified/indicated by a respective CORESET index of the plurality of CORESET indexes. A first CORESET of the plurality of CORESETS may be identified by a first CORESET index of the plurality of CORESET indexes. A second CORESET of the plurality of CORESETS may be identified by a second CORESET index of the plurality of CORESET indexes.
The one or more configuration parameters may indicate one or more CORESET pool indexes (e.g., provided by a higher layer parameter CoresetPoolIndex) for the plurality of CORESETS. Each CORESET of the plurality of CORESETS may comprise (or be configured/indicated by the one or more configuration parameters) by a respective CORESET pool index of the one or more CORESET pool indexes (e.g., 0, 1). The one or more configuration parameters may indicate, for each CORESET of the plurality of CORESETS, a respective CORESET pool index of the one or more CORESET pool indexes. For example, the one or more configuration parameters may indicate, for a first CORESET of the plurality of CORESETS, a first CORESET pool index (CoresetPoolIndex=0). The one or more configuration parameters may indicate, for a second CORESET of the plurality of CORESETS, a second CORESET pool index (CoresetPoolIndex=1). The one or more CORESET pool indexes may comprise the first CORESET pool index and the second CORESET pool index.
The one or more configuration parameters may not indicate, for a CORESET of the plurality of CORESETS, a CORESET pool index. The higher layer parameter CoresetPoolIndex may be absent in configuration parameter(s) of the CORESET. The wireless device may determine a value (or a default value) of/for a CORESET pool index of the CORESET as the first CORESET pool index (CoresetPoolIndex=0). The wireless device may determine the value (or the default value) of/for the CORESET pool index of the CORESET as the first CORESET pool index, for example, based on the one or more configuration parameters not indicating, for the CORESET, a CORESET pool index. The first CORESET pool index (CoresetPoolIndex=0) may be the CORESET pool index of the CORESET, for example, based on the one or more configuration parameters not indicating, for the CORESET, a CORESET pool index.
A first CORESET pool (e.g., CORESET pool 0) may comprise one or more first CORESETS with a CORESET pool index that is equal to a first CORESET pool index (e.g., CoresetPoolIndex=0). The one or more configuration parameters may indicate the first CORESET pool index for each CORESET of the one or more first CORESETS in the first CORESET pool. The plurality of CORESETS may comprise the one or more first CORESETS.
A second CORESET pool (e.g., CORESET pool 1) may comprise one or more second CORESETS with a CORESET pool index that is equal to a second CORESET pool index (e.g., CoresetPoolIndex=1). The one or more configuration parameters may indicate the second CORESET pool index for each CORESET of the one or more second CORESETS in the second CORESET pool. The plurality of CORESETS may comprise the one or more second CORESETS.
The one or more configuration parameters may not indicate a CORESET pool index for a CORESET of the plurality of CORESETS. The wireless device may determine a default value for the CORESET pool index of the CORESET, for example, based on the one or more configuration parameters not indicating the CORESET pool index for the CORESET. The default value may be equal to zero (CoresetPoolIndex=0). The default value may be equal to the first CORESET pool index (e.g., zero). The first CORESET pool may comprise the CORESET based on the one or more configuration parameters not indicating, for the CORESET, the CORESET pool index. The first CORESET pool may comprise the CORESET based on the default value of/for the CORESET pool index of the CORESET being equal to the first CORESET pool index.
A first CORESET pool index of a first CORESET and a second CORESET pool index of a second CORESET may be the same. For example, the one or more configuration parameters may indicate the same CORESET pool index for the first CORESET and the second CORESET. The plurality of CORESETS may comprise the first CORESET and the second CORESET. The one or more CORESET pool indexes may comprise the first CORESET pool index and the second CORESET pool index. Based on the first CORESET pool index of the first CORESET and the second CORESET pool index of the second CORESET being the same, the wireless device may group the first CORESET and the second CORESET in a same CORESET pool (e.g., CoresetPoolIndex=0 or CoresetPoolIndex=1). A first CORESET pool comprising the first CORESET and a second CORESET pool comprising the second CORESET may be the same, for example, based on the first CORESET pool index of the first CORESET and the second CORESET pool index of the second CORESET being the same.
A first CORESET pool index of a first CORESET and a second CORESET pool index of a second CORESET may be different. The plurality of CORESETS may comprise the first CORESET and the second CORESET. The one or more CORESET pool indexes may comprise the first CORESET pool index and the second CORESET pool index. The wireless device may group the first CORESET and the second CORESET in different CORESET pools, for example, based on the first CORESET pool index of the first CORESET and the second CORESET pool index of the second CORESET being different. The wireless device may group the first CORESET in a first CORESET pool (e.g., CoresetPoolIndex=0). The wireless device may group the second CORESET in a second CORESET pool (e.g., CoresetPoolIndex=1) that is different from the first CORESET pool, for example, based on the first CORESET pool index and the second CORESET pool index being different. The first CORESET pool and the second CORESET pool may be different, for example, based on the first CORESET pool index of the first CORESET and the second CORESET pool index of the second CORESET being different.
The one or more configuration parameters may indicate at least two CORESET pool indexes (e.g., 0 and 1) for a higher layer parameter CORESETPoolIndex. The one or more configuration parameters may comprise the higher layer parameter CORESETPoolIndex with (or set to) the at least two CORESET pool indexes. The at least two CORESET pool indexes may comprise a first CORESET pool index (e.g., 0) for/of one or more first CORESETS of the plurality of CORESETS. The at least two CORESET pool indexes may comprise a second CORESET pool index (e.g., 1), different from the first CORESET pool index, for/of one or more second CORESETS of the plurality of CORESETS. The one or more first CORESETS may comprise one or more third CORESETS, of the plurality of CORESETS, for example, without a value for a higher layer parameter CORESETPoolIndex. The one or more configuration parameters may not comprise the higher layer parameter CORESETPoolIndex for the one or more third CORESETS.
The cell may comprise a plurality of transmission and reception points (TRPs). The plurality of TRPs may serve the cell (or may serve the wireless device in/via/of the cell). The plurality of TRPs may comprise a first TRP and a second TRP.
The first TRP may send (e.g., transmit) a downlink signal/transmission (e.g., PDSCH, PDCCH, DCI) via the first CORESET pool. Sending (e.g., transmitting) the downlink signal/transmission (e.g., PDCCH, DCI) via the first CORESET pool may comprise that the first TRP sends (e.g., transmits) the downlink signal/transmission via a first CORESET with (e.g., configured with or associated with) the first CORESET pool index. The first TRP may not send (e.g., transmit) a downlink signal/transmission (e.g., PDSCH, PDCCH, DCI) via the second CORESET pool. Not sending (e.g., transmitting) the downlink signal/transmission (e.g., PDSCH, PDCCH, DCI) via the second CORESET pool may comprise that the first TRP does not send (e.g., transmit) the downlink signal/transmission via a second CORESET with (e.g., configured with or associated with) the second CORESET pool index.
The second TRP may send (e.g., transmit) a downlink signal/transmission (e.g., PDSCH, PDCCH, DCI) via the second CORESET pool. Sending (e.g., transmitting) the downlink signal/transmission (e.g., PDCCH, DCI) via the second CORESET pool may comprise that the second TRP sends (e.g., transmits) the downlink signal/transmission via a second CORESET with (e.g., configured with or associated with) the second CORESET pool index. The second TRP may not send (e.g., transmit) a downlink signal/transmission (e.g., PDCCH, DCI) via the first CORESET pool. Not sending (e.g., transmitting) the downlink signal/transmission (e.g., PDCCH, DCI) via the first CORESET pool may comprise that the second TRP does not send (e.g., transmit) the downlink signal/transmission via a first CORESET with (e.g., configured with or associated with) the first CORESET pool index.
The one or more configuration parameters may indicate a plurality of uplink resources (e.g., PUCCH-Resource, SRS-Resource, and the like). The one or more configuration parameters may indicate the plurality of uplink resources for the (active) uplink BWP of the cell. The (active) uplink BWP may comprise the plurality of uplink resources. The (active) uplink BWP of an uplink carrier (e.g., NUL, SUL) of the cell may comprise the plurality of uplink resources.
The plurality of uplink resources may comprise/be a plurality of PUCCH resources. The plurality of uplink resources may comprise/be a plurality of SRS resources. The plurality of uplink resources may comprise/be a plurality of PUSCH resources.
The one or more configuration parameters may indicate one or more uplink resource groups/sets (e.g., PUCCH-ResourceGroup, SRS-ResourceSet). The one or more uplink resource groups/sets may comprise the plurality of uplink resources. Each uplink resource group/set of the one or more uplink resource groups/sets may comprise respective uplink resource(s) of the plurality of uplink resources. For example, a first uplink resource group/set of the one or more uplink resource groups/sets may comprise one or more first uplink resources of the plurality of uplink resources. A second uplink resource group/set of the one or more uplink resource groups/sets may comprise one or more second uplink resources of the plurality of uplink resources. The first uplink resource group/set and the second uplink resource group/set may not share/comprise a common/shared/same uplink resource of the plurality of uplink resources. A first uplink resource in (or belonging to) the first uplink resource group/set may not be in (or belong to) the second uplink resource group/set.
example, the one or more configuration parameters may indicate a plurality of uplink resource indexes/identifiers/indicators (e.g., provided by a higher layer parameter PUCCH-ResourceId, SRS-ResourceId) for the plurality of uplink resources. In an example, each uplink resource of the plurality of uplink resources may be identified/indicated by a respective uplink resource index of the plurality of uplink resource indexes. In an example, a first uplink resource of the plurality of uplink resources may be identified by a first uplink resource index of the plurality of uplink resource indexes. A second uplink resource of the plurality of uplink resources may be identified by a second uplink resource index of the plurality of uplink resource indexes.
The one or more configuration parameters may indicate one or more uplink resource group/set indexes/identifiers/indicators (e.g., provided by a higher layer parameter PUCCH-ResourceGroupId, SRS-ResourceSetId) for the one or more uplink resource groups/sets. Each uplink resource group/set of the one or more uplink resource groups/sets may be identified/indicated by a respective uplink resource group/set index of the one or more uplink resource group/set indexes. A first uplink resource group/set of the one or more uplink resource groups/sets may be identified by a first uplink resource group/set index of the one or more uplink resource group/set indexes. A second uplink resource group/set of the one or more uplink resource groups/sets may be identified by a second uplink resource group/set index of the one or more uplink resource group/set indexes.
The one or more configuration parameters may indicate one or more CORESET pool indexes (e.g., provided by a higher layer parameter CoresetPoolIndex) for the plurality of uplink resources. Each uplink resource of the plurality of uplink resources may comprise (or be configured/indicated by the one or more configuration parameters) by a respective CORESET pool index of the one or more CORESET pool indexes (e.g., 0, 1). The one or more configuration parameters may indicate, for each uplink resource of the plurality of uplink resources, a respective CORESET pool index of the one or more CORESET pool indexes. The one or more configuration parameters may indicate, for a first uplink resource of the plurality of uplink resources, a first CORESET pool index (CoresetPoolIndex=0). The one or more configuration parameters may indicate, for a second uplink resource of the plurality of uplink resources, a second CORESET pool index (CoresetPoolIndex=1). The one or more CORESET pool indexes may comprise the first CORESET pool index and the second CORESET pool index.
The one or more configuration parameters may not indicate, for an uplink resource of the plurality of uplink resources, a CORESET pool index. The higher layer parameter CoresetPoolIndex may be absent in configuration parameter(s) of the uplink resource. The wireless device may determine a value (or a default value) of/for a CORESET pool index of the uplink resource as the first CORESET pool index (CoresetPoolIndex=0). The wireless device may determine the value (or the default value) of/for the CORESET pool index of the uplink resource as the first CORESET pool index, for example, based on the one or more configuration parameters not indicating, for the uplink resource, a CORESET pool index. The first CORESET pool index (CoresetPoolIndex=0) may be the CORESET pool index of the uplink resource, for example, based on the one or more configuration parameters not indicating, for the uplink resource, a CORESET pool index.
The one or more configuration parameters may indicate at least two CORESET pool indexes (e.g., 0 and 1) for a higher layer parameter CORESETPoolIndex. The one or more configuration parameters may comprise the higher layer parameter CORESETPoolIndex with (or set to) the at least two CORESET pool indexes. The at least two CORESET pool indexes may comprise a first CORESET pool index (e.g., 0) for/of one or more first uplink resources of the plurality of uplink resources. The at least two CORESET pool indexes may comprise a second CORESET pool index (e.g., 1), different from the first CORESET pool index, for/of one or more second uplink resources of the plurality of uplink resources. The one or more first uplink resources may comprise one or more third uplink resources, of the plurality of uplink resources, without a value for a higher layer parameter CORESETPoolIndex. The one or more configuration parameters may not comprise the higher layer parameter CORESETPoolIndex for the one or more third uplink resources.
In an example, the cell may comprise a plurality of transmission and reception points (TRPs). The plurality of TRPs may serve the cell (or may serve the wireless device in/via/of the cell). The plurality of TRPs may comprise a first TRP and a second TRP.
The first TRP, of the plurality of TRPs, may receive an uplink signal/transmission (e.g., PUSCH, PUCCH, SRS, UCI, PRACH) via a first uplink resource, of the plurality of uplink resources, with (e.g., configured with or associated with) the first CORESET pool index. The first TRP may not receive an uplink signal/transmission (e.g., PUSCH, PUCCH, SRS, UCI, PRACH) via a second uplink resource, of the plurality of uplink resources, with (e.g., configured with or associated with) the second CORESET pool index.
The second TRP, of the plurality of TRPs, may receive an uplink signal/transmission (e.g., PUSCH, PUCCH, SRS, UCI, PRACH) via a second uplink resource, of the plurality of uplink resources, with (e.g., configured with or associated with) the second CORESET pool index. The second TRP may not receive an uplink signal/transmission (e.g., PUSCH, PUCCH, SRS, UCI, PRACH) via a first uplink resource, of the plurality of uplink resources, with (e.g., configured with or associated with) the first CORESET pool index.
The one or more configuration parameters may indicate one or more CORESET pool indexes (e.g., provided by a higher layer parameter CoresetPoolIndex) for the one or more uplink resource groups/sets. Each uplink resource group/set of one or more uplink resource groups/sets may comprise (or be configured/indicated by the one or more configuration parameters) by a respective CORESET pool index of the one or more CORESET pool indexes (e.g., 0, 1). The one or more configuration parameters may indicate, for each uplink resource group/set of the one or more uplink resource groups/sets, a respective CORESET pool index of the one or more CORESET pool indexes. The one or more configuration parameters may indicate, for a first uplink resource group/set of the one or more uplink resource groups/sets, a first CORESET pool index (CoresetPoolIndex=0). The one or more configuration parameters may indicate, for a second uplink resource group/set of the one or more uplink resource groups/sets, a second CORESET pool index (CoresetPoolIndex=1). The one or more CORESET pool indexes may comprise the first CORESET pool index and the second CORESET pool index.
The one or more configuration parameters may not indicate, for an uplink resource group/set of the one or more uplink resource groups/sets, a CORESET pool index. The higher layer parameter CoresetPoolIndex may be absent in configuration parameter(s) of the uplink resource group/set. The wireless device may determine a value (or a default value) of/for a CORESET pool index of the uplink resource group/set as the first CORESET pool index (CoresetPoolIndex=0). The wireless device may determine the value (or the default value) of/for the CORESET pool index of the uplink resource group/set as the first CORESET pool index, for example, based on the one or more configuration parameters not indicating, for the uplink resource group/set, a CORESET pool index. The first CORESET pool index (CoresetPoolIndex=0) may be the CORESET pool index of the uplink resource group/set, for example, based on the one or more configuration parameters not indicating, for the uplink resource group/set, a CORESET pool index.
The one or more configuration parameters may indicate at least two CORESET pool indexes (e.g., 0 and 1) for a higher layer parameter CORESETPoolIndex. The one or more configuration parameters may comprise the higher layer parameter CORESETPoolIndex with (or set to) the at least two CORESET pool indexes. The at least two CORESET pool indexes may comprise a first CORESET pool index (e.g., 0) for/of one or more first uplink resource groups/sets of the one or more uplink resource groups/sets. The at least two CORESET pool indexes may comprise a second CORESET pool index (e.g., 1), different from the first CORESET pool index, for/of one or more second uplink resource groups/sets of the one or more uplink resource groups/sets. The one or more first uplink resource groups/sets may comprise one or more third uplink resource groups/sets, of the one or more uplink resource groups/sets, without a value for a higher layer parameter CORESETPoolIndex. The one or more configuration parameters may not comprise the higher layer parameter CORESETPoolIndex for the one or more third uplink resource groups/sets.
In an example, the cell may comprise a plurality of transmission and reception points (TRPs). The plurality of TRPs may serve the cell (or may serve the wireless device in/via/of the cell). The plurality of TRPs may comprise a first TRP and a second TRP.
The first TRP, of the plurality of TRPs, may receive an uplink signal/transmission (e.g., PUSCH, PUCCH, SRS, UCI, PRACH) via an uplink resource of/in a first uplink resource group/set, of the one or more uplink resource groups/sets, with (e.g., configured with or associated with) the first CORESET pool index. The first TRP may not receive an uplink signal/transmission (e.g., PUSCH, PUCCH, SRS, UCI, PRACH) via an uplink resource in/of a second uplink resource group/set, of the one or more uplink resource groups/sets, with (e.g., configured with or associated with) the second CORESET pool index.
The second TRP, of the plurality of TRPs, may receive an uplink signal/transmission (e.g., PUSCH, PUCCH, SRS, UCI, PRACH) via an uplink resource in/of a second uplink resource group/set, of the one or more uplink resource groups/sets, with (e.g., configured with or associated with) the second CORESET pool index. The second TRP may not receive an uplink signal/transmission (e.g., PUSCH, PUCCH, SRS, UCI, PRACH) via an uplink resource in/of a first uplink resource group/set, of the one or more uplink resource groups/sets, with (e.g., configured with or associated with) the first CORESET pool index.
The wireless device may send (e.g., transmit), via an uplink resource, an uplink signal/transmission (e.g., PUSCH/PUCCH/SRS transmission). The plurality of uplink resources may comprise the uplink resource. An uplink resource group/set of the one or more uplink resource groups/sets may comprise the uplink resource.
The wireless device may receive, via a CORESET of the plurality of CORESETS, DCI scheduling/triggering/indicating transmission of the uplink signal/transmission. The DCI may schedule/trigger/indicate transmission of the uplink signal/transmission via the uplink resource. The DCI may indicate the uplink resource. The DCI may comprise a field indicating the uplink resource.
The uplink signal/transmission may be a PUSCH transmission (e.g., transport block). The uplink resource may be a PUSCH resource. The DCI may schedule transmission of the PUSCH transmission.
The uplink signal/transmission may be a PUCCH transmission (e.g., HARQ-ACK information feedback). The uplink resource may be a PUCCH resource. The DCI may schedule reception of a transport block (or a PDSCH reception). The uplink signal/transmission may be a HARQ-ACK information feedback of the transport block.
The uplink signal/transmission may be an SRS. The uplink resource may be an SRS resource. The DCI may schedule transmission of the SRS. The SRS may be, for example, an aperiodic SRS.
The CORESET that the wireless device receives the DCI may be associated with a CORESET pool index. The one or more CORESET pool indexes may comprise the CORESET pool index. The one or more configuration parameters may indicate, for the CORESET, the CORESET pool index. The one or more configuration parameters may not indicate, for the CORESET, the CORESET pool index (CoresetPoolIndex=0 or CoresetPoolIndex=1). A value (or a default value) of the CORESET pool index of the CORESET may be equal to the first CORESET pool index (CoresetPoolIndex=0), for example, based on the one or more configuration parameters not indicating, for the CORESET, a CORESET pool index.
The uplink resource may be associated with the CORESET pool index. The uplink resource may be associated with the CORESET pool index, for example, based on receiving, via the CORESET associated with the CORESET pool index, the DCI scheduling/triggering/indicating transmission of the uplink signal/transmission via the uplink resource.
The uplink resource group/set comprising the uplink resource may be associated with the CORESET pool index. The uplink resource group/set may be associated with the CORESET pool index, for example, based on receiving, via the CORESET associated with the CORESET pool index, the DCI scheduling/triggering/indicating transmission of the uplink signal/transmission via the uplink resource in (that belongs to) the uplink resource group/set. The uplink resource group/set may comprise one or more uplink resources that comprise the uplink resource. The one or more uplink resources may be associated with the CORESET pool index, for example, based on the uplink resource group/set comprising the one or more uplink resources being associated with the CORESET pool index. Each uplink resource of the one or more uplink resources may be associated with the CORESET pool index, for example, based on the uplink resource group/set being associated with the CORESET pool index.
The uplink signal/transmission may be associated with the CORESET pool index. The uplink signal/transmission may be associated with the CORESET pool index, for example, based on receiving, via the CORESET associated with the CORESET pool index, the DCI scheduling/triggering/indicating transmission of the uplink signal/transmission.
The one or more configuration parameters may indicate a plurality of TCI states (e.g., DL-orJoint-TCIState). The plurality of TCI states may be unified/common/joint TCI states. The one or more configuration parameters may comprise one or more PDSCH configuration parameters. The one or more PDSCH configuration parameters may indicate the plurality of TCI states. As shown in
The one or more configuration parameters may comprise the one or more PDSCH configuration parameters, for example, for the downlink BWP of the cell. The one or more configuration parameters may indicate the plurality of TCI states for the downlink BWP of the cell.
The one or more configuration parameters may comprise the one or more PDSCH configuration parameters, for example, for a second downlink BWP of a second cell. The one or more configuration parameters may indicate the plurality of TCI states for the second downlink BWP of the second cell. The one or more cells may comprise the second cell. The one or more configuration parameters may comprise, for the downlink BWP of the cell, a reference unified TCI state list parameter (e.g., refUnifiedTCIStateList) indicating the second downlink BWP of the second cell. The reference unified TCI state list parameter may comprise a BWP index (e.g., BWP-Id) identifying/indicating the second downlink BWP. The reference unified TCI state list parameter may comprise a cell index (e.g., ServCellIndex) identifying/indicating the second cell.
The one or more configuration parameters may comprise a unified-TCI-state-type parameter (e.g., unifiedtci-StateType). The one or more configuration parameters may comprise one or more serving cell parameters (e.g., ServingCellConfig) comprising the unified-TCI-state-type parameter. The unified-TCI-state-type parameter may indicate the unified TCI state type of the cell.
For example, unified-TCI-state-type parameter may be set to “JointULDL”. The wireless device may use/apply the plurality of TCI states for both uplink transmissions (e.g., PUSCH/PUCCH/SRS transmissions) of the cell and downlink receptions (e.g., PDCCH/PDSCH/CSI-RS receptions) of the cell, for example, based on the one or more configuration parameters comprising the unified-TCI-state-type parameter set to “JointULDL”.
For example, unified-TCI-state-type parameter may be set to “SeparateULDL”. The wireless device may use/apply the plurality of TCI states for downlink receptions (e.g., PDCCH/PDSCH/CSI-RS receptions) of the cell, for example, based on the one or more configuration parameters comprising the unified-TCI-state-type parameter set to “SeparateULDL”. The wireless device may not use/apply the plurality of TCI states for uplink transmissions (e.g., PUSCH/PUCCH/SRS transmissions) of the cell, for example, based on the one or more configuration parameters comprising the unified-TCI-state-type parameter set to “SeparateULDL”.
The one or more configuration parameters may indicate a second plurality of TCI states (e.g., UL-TCIState). The one or more configuration parameters may comprise one or more uplink BWP configuration parameters. The one or more configuration parameters may indicate the second plurality of TCI states. For example, as shown in
The one or more configuration parameters may comprise the one or more uplink BWP configuration parameters, for example, for the uplink BWP of the cell. The one or more configuration parameters may indicate the second plurality of TCI states for the uplink BWP of the cell.
The one or more configuration parameters may comprise the one or more uplink BWP configuration parameters, for example, for a second uplink BWP of a second cell. The one or more configuration parameters may indicate the second plurality of TCI states for the second uplink BWP of the second cell. The one or more cells may comprise the second cell. The one or more configuration parameters may comprise, for the uplink BWP of the cell, a reference unified TCI state list parameter (e.g., refUnifiedTCIStateList) indicating the second uplink BWP of the second cell. The reference unified TCI state list parameter may comprise a BWP index (e.g., BWP-Id) identifying/indicating the second uplink BWP. The reference unified TCI state list parameter may comprise a cell index (e.g., ServCellIndex) identifying/indicating the second cell.
The wireless device may use/apply the second plurality of TCI states for uplink transmissions (e.g., PUSCH/PUCCH/SRS transmissions) of the cell, for example, based on the one or more configuration parameters comprising the unified-TCI-state-type parameter set to “SeparateULDL”. The wireless device may not use/apply the second plurality of TCI states for downlink receptions (e.g., PDCCH/PDSCH/CSI-RS receptions) of the cell, for example, based on the one or more configuration parameters comprising the unified-TCI-state-type parameter set to “SeparateULDL”.
The wireless device may use, for downlink receptions via the downlink BWP of the cell, the plurality of TCI states, for example, based on the one or more configuration parameters indicating the plurality of TCI states for the downlink BWP of the cell. The wireless device may use, for uplink transmissions receptions via the uplink BWP of the cell, the plurality of TCI states, for example, based on the one or more configuration parameters indicating the plurality of TCI states for the downlink BWP of the cell.
The wireless device may use, for downlink receptions via the downlink BWP of the cell, the plurality of TCI states of the second downlink BWP of the second cell. The wireless device may use the plurality of TCI states of the second downlink BWP of the second cell, for example, based on the reference unified TCI state list parameter indicating, for the downlink BWP of the cell, the second downlink BWP of the second cell. The wireless device may use, for uplink transmissions receptions via the uplink BWP of the cell, the plurality of TCI states of the second downlink BWP of the second cell. The wireless device may use the plurality of TCI states of the second downlink BWP of the second cell, for example, based on the reference unified TCI state list parameter indicating, for the downlink BWP of the cell, the second downlink BWP of the second cell.
The wireless device may use, for uplink transmissions receptions via the uplink BWP of the cell, the second plurality of TCI states of the second uplink BWP of the second cell. The wireless device may use the second plurality of TCI states of the second uplink BWP of the second cell, for example, based on the one or more configuration parameters indicating the second plurality of TCI states for the uplink BWP of the cell. The wireless device may use, for uplink transmissions receptions via the uplink BWP of the cell, the second plurality of TCI states of the second uplink BWP of the second cell. The wireless device may use the second plurality of TCI states of the second uplink BWP of the second cell, for example, based on the reference unified TCI state list parameter indicating, for the uplink BWP of the cell, the second uplink BWP of the second cell.
The one or more configuration parameters may indicate, for the cell, a PCI. The one or more configuration parameters may indicate, for the one or more cells, one or more PCIs. The one or more PCIs may comprise the PCI of the cell. The one or more configuration parameters may comprise a higher layer (or RRC) parameter physCellId indicating the one or more PCIs for the one or more cells. The one or more configuration parameters may indicate, for each cell of the one or more cells, a respective PCI of the one or more PCIs. The one or more configuration parameters may comprise the higher layer (or RRC) parameter physCellId indicating a respective PCI of the one or more PCIs for each cell of the one or more cells. For example, the one or more configuration parameters may indicate, for a first cell of the one or more cells, a first PCI of the one or more PCIs. The first PCI may identify a physical cell identity of the first cell. The one or more configuration parameters may indicate, for a second cell of the one or more cells, a second PCI of the one or more PCIs. The second PCI may identify a physical cell identity of the second cell.
The one or more configuration parameters may indicate a list of PCI sets (e.g., indicated by a RRC parameter additionalPCIList). The one or more configuration parameters may comprise one or more serving cell parameters (e.g., ServingCellConfig) indicating the list of PCI sets. The list of PCI sets may comprise at least one PCI set.
The list of PCI sets (or the at least one PCI set) may comprise/indicate at least one PCI (e.g., additionalPCI) of the one or more PCIs. Each PCI set of the list of PCI sets may comprise/indicate a respective PCI of the at least one PCI. The one or more configuration parameters may indicate, for each PCI set of the list of PCI sets, a respective PCI of the at least one PCI. The at least one PCI may not comprise the PCI of the cell. Each PCI of the at least one PCI may be different from the PCI of the cell. The one or more PCIs may comprise the at least one PCI and the PCI of the cell. The at least one PCI may indicate/identify at least one cell of the one or more cells. Each PCI of the at least one PCI may indicate/identify a respective cell of the at least one cell. For example, a first PCI set of the list of PCI sets may comprise a first PCI of the at least one PCI. The first PCI may indicate/identify a first cell of the at least one cell. A second PCI set of the list of PCI sets may comprise a second PCI of the at least one PCI. The second PCI may indicate/identify a second cell of the at least one cell. The at least one cell may not comprise the cell. Each cell of the at least one cell may be different from the cell. The one or more cells may comprise the at least one cell and the cell.
The at least one cell may be/comprise, for example, at least one non-serving cell. The at least one cell may be/comprise, for example, at least one neighboring cell. The at least one cell may be/comprise, for example, at least one candidate/assisting cell.
A maximum size/length of the list of PCI sets may be equal to a value (e.g., 7). A maximum number of PCI sets in the list of PCI sets may be equal to a value (e.g., 7).
The list of PCI sets (or the at least one PCI set) may comprise/indicate at least one additional PCI index (e.g., additionalPCIIndex). Each PCI set of the list of PCI sets may comprise/indicate a respective additional PCI index of the at least one additional PCI index. The one or more configuration parameters may indicate the at least one additional PCI index for the list of PCI sets. The one or more configuration parameters may indicate, for each PCI set of the list of PCI sets, a respective additional PCI index of the at least one additional PCI index. Each PCI set of the list of PCI sets may be identified/indicated by a respective additional PCI index of the at least one additional PCI index. For example, a first PCI set of the list of PCI sets may be identified/indicated by a first additional PCI index of the at least one additional PCI index. A second PCI set of the list of PCI sets may be identified/indicated by a second additional PCI index of the at least one additional PCI index.
The one or more configuration parameters may indicate the list of PCI sets, for example, for inter-cell beam management. The one or more configuration parameters may indicate the list of PCI sets, for example, for inter-cell multi-TRP operation/mode.
For example, the list of PCI sets=[{0, PCI 5}, {1, PCI 2}, {2, PCI 4}, {3, PCI 10}, {4, PCI 21}]. The PCI of the cell may be different from PCI 5, PCI 2, PCI 4, PCI 10, and PCI 21. {0, PCI 5) may be a first PCI set of the list of PCI sets. ‘0’ may be a first additional PCI index of the first PCI set. PCI 5 may be a first PCI indicating/identifying/of a first cell. {1, PCI 2) may be a second PCI set of the list of PCI sets. ‘1’ may be a second additional PCI index of the second PCI set. PCI 2 may be a second PCI indicating/identifying/of a second cell. {2, PCI 4) may be a third PCI set of the list of PCI sets. ‘2’ may be a third additional PCI index of the third PCI set. PCI 4 may be a third PCI indicating/identifying/of a third cell. {3, PCI 10) may be a fourth PCI set of the list of PCI sets. ‘3’ may be a fourth additional PCI index of the fourth PCI set. PCI 10 may be a fourth PCI indicating/identifying/of a fourth cell. {4, PCI 21) may be a fifth PCI set of the list of PCI sets. ‘4’ may be a fifth additional PCI index of the fifth PCI set. PCI 21 may be a fifth PCI indicating/identifying/of a fifth cell. The at least one additional PCI index may comprise the first additional PCI index (0), the second additional PCI index (1), the third additional PCI index (2), the fourth additional PCI index (3), and the fifth additional PCI index (4).
The one or more configuration parameters may indicate, for one or more TCI states of the plurality of TCI states (or the second plurality of TCI states), the at least one additional PCI index. The one or more configuration parameters may indicate, for each TCI state of the one or more TCI states, a respective additional PCI index (e.g., additionalPCI, AdditionalPCIIndex) of the at least one additional PCI index. For example, the one or more configuration parameters may indicate, for a first TCI state of the one or more TCI states, a first additional PCI index (e.g., 0) of the at least one additional PCI index. The first additional PCI index may indicate/identify a first PCI set of the list of PCI sets. The one or more configuration parameters may indicate, for a second TCI state of the one or more TCI states, a second additional PCI index (e.g., 1) of the at least one additional PCI index. The second additional PCI index may indicate/identify a second PCI set of the list of PCI sets. The one or more configuration parameters may indicate, for a third TCI state of the one or more TCI states, a third additional PCI index (e.g., 2) of the at least one additional PCI index, and so on. The third additional PCI index may indicate/identify a third PCI set of the list of PCI sets.
A TCI state of the one or more TCI states may be associated with an additional PCI index of the at least one additional PCI index. The association may be, for example, based on the one or more configuration parameters indicating, for the TCI state, the additional PCI index. The TCI state may comprise/have the additional PCI index. The additional PCI index may indicate/identify a PCI set of the list of PCI sets (or the at least one PCI set). The PCI set may comprise/indicate/have a second PCI of the at least one PCI. The second PCI may indicate/identify a second cell of the at least one cell. The TCI state may be associated with the second PCI (or the second cell), for example, based on the one or more configuration parameters indicating, for the TCI state, the additional PCI index indicating the second PCI (or the second cell). The second PCI of the second cell may be, for example, different from the PCI of the cell.
The one or more configuration parameters may not indicate, for one or more TCI states of the plurality of TCI states, an additional PCI index of the at least one additional PCI index. An additional PCI index may be absent (or may not be present) in configuration parameter(s) of the one or more TCI states. The one or more configuration parameters may comprise the configuration parameter(s) of the one or more TCI states. The one or more TCI states of the plurality of TCI states may not be associated with an additional PCI index. The one or more TCI states may not comprise/have an additional PCI index. Each TCI state of the one or more TCI states may not comprise/have an additional PCI index. The one or more TCI states may be associated with the cell (or the PCI of the cell), for example, based on the one or more configuration parameters not indicating, for the one or more TCI states of the plurality of TCI states, an additional PCI index. The one or more TCI states may be associated with the cell (or the PCI of the cell), for example, based on the one or more configuration parameters not indicating, for each TCI state of the one or more TCI states, an additional PCI index. The one or more TCI states may be associated with the cell (or the PCI of the cell), for example, based on the one or more configuration parameters not indicating, for each TCI state of the one or more TCI states, an additional PCI index of the at least one additional PCI index.
The wireless device may receive a control command (e.g., MAC-CE, DCI, downlink control command, Unified TCI States Activation/Deactivation MAC CE, Activation command 1720, etc.). As shown in
The wireless device may map the subset of TCI states to one or more TCI codepoints. The wireless device may map respective TCI state(s) of the subset of TCI states to a respective TCI codepoint of the one or more TCI codepoints. The one or more TCI codepoints may indicate/comprise the subset of TCI states. Each TCI codepoint of the one or more TCI codepoints may indicate respective TCI state(s) of the subset of TCI states. Each TCI codepoint of the one or more TCI codepoints may indicate/comprise one or more TCI states.
For example, as shown in
The wireless device may receive DCI 1730. As shown in
The TCI codepoint may comprise/indicate at least two TCI states. The at least two TCI states may comprise TCI state 26 and TCI state 61. The DCI 1730 may indicate activation or selection of the at least two TCI states. The TCI codepoint may or may not be a lowest TCI codepoint among the one or more TCI codepoints.
The first TCI state (e.g., TCI state 26 as shown in
The first TCI state may be associated with the PCI of the cell. The first TCI state may not comprise/have an additional PCI index of the at least one additional PCI index. An additional PCI index may be absent in configuration parameter(s) of the first TCI state. The one or more configuration parameters may comprise the configuration parameter(s) of the first TCI state. The first TCI state may be associated with the PCI of the cell, for example, based on the first TCI state not comprising/having an additional PCI index of the at least one additional PCI index. The first reference signal may be quasi co-located with a first SS/PBCH block. The first reference signal may be a first SS/PBCH block. The first SS/PBCH block may be associated with the cell. The first SS/PBCH block may be associated with the PCI of the cell. The one or more configuration parameters may indicate, for the cell, the first SS/PBCH block.
The first TCI state may be associated with a second PCI of a second cell. The at least one cell of the one or more cells may comprise the second cell. The at least one PCI in (or indicated by) the list of PCI sets may comprise the second PCI. The second PCI may indicate/identify the second cell. The first TCI state may comprise/have an additional PCI index of the at least one additional PCI index. The one or more configuration parameters may indicate, for the first TCI state, the additional PCI index. The additional PCI index may indicate a PCI set of the list of PCI sets. The PCI set may comprise/indicate the second PCI of the second cell. The first TCI state may be associated with the second PCI of the second cell, for example, based on the first TCI state comprising/having the additional PCI index indicating the second PCI of the second cell. The first TCI state may be associated with the second PCI of the second cell, for example, based on the one or more configuration parameters indicating, for the first TCI state, the additional PCI index that indicates the second PCI of the second cell. The first reference signal may be quasi co-located with a first SS/PBCH block. The first reference signal may be a first SS/PBCH block. The first SS/PBCH block may be associated with the second cell. The first SS/PBCH block may be associated with the second PCI of the second cell. The one or more configuration parameters may indicate, for the second cell, the first SS/PBCH block.
The second TCI state (e.g., TCI state 61 as shown in
The second TCI state may be associated with a second PCI of a second cell. The at least one cell of the one or more cells may comprise the second cell. The at least one PCI in (or indicated by) the list of PCI sets may comprise the second PCI. The second PCI may indicate/identify the second cell. The second TCI state may comprise/have an additional PCI index of the at least one additional PCI index. The one or more configuration parameters may indicate, for the second TCI state, the additional PCI index. The additional PCI index may indicate a PCI set of the list of PCI sets. The PCI set may comprise/indicate the second PCI of the second cell. The second TCI state may be associated with the second PCI of the second cell, for example, based on the second TCI state comprising/having the additional PCI index indicating the second PCI of the second cell. The second TCI state may be associated with the second PCI of the second cell, for example, based on the one or more configuration parameters indicating, for the second TCI state, the additional PCI index that indicates the second PCI of the second cell. The second reference signal may be quasi co-located with a second SS/PBCH block. The second reference signal may be a second SS/PBCH block. The second SS/PBCH block may be associated with the second cell. The second SS/PBCH block may be associated with the second PCI of the second cell. The one or more configuration parameters may indicate, for the second cell, the second SS/PBCH block.
The second TCI state may be associated with the PCI of the cell. The second TCI state may not comprise/have an additional PCI index of the at least one additional PCI index. An additional PCI index may be absent in configuration parameter(s) of the second TCI state. The one or more configuration parameters may comprise the configuration parameter(s) of the second TCI state. The second TCI state may be associated with the PCI of the cell, for example, based on the second TCI state not comprising/having an additional PCI index of the at least one additional PCI index. The second reference signal may be quasi co-located with a second SS/PBCH block. The second reference signal may be a second SS/PBCH block. The second SS/PBCH block may be associated with the cell. The second SS/PBCH block may be associated with the PCI of the cell. The one or more configuration parameters may indicate, for the cell, the second SS/PBCH block.
The second cell with (or identified/indicated by) the second PCI may be a non-serving cell. The second cell with (or identified/indicated by) the second PCI may be a neighboring cell. The second cell with (or identified/indicated by) the second PCI may be a candidate/assisting cell.
The one or more configuration parameters may indicate, for the first TCI state, a first TCI state index (e.g., tci-StateId). The one or more configuration parameters may indicate, for the second TCI state, a second TCI state index. The first TCI state index may be lower/less than the second TCI state index.
The control command indicating activation of the subset of TCI states may comprise a plurality of fields. A first field of the plurality of fields may indicate the first TCI state. For example, the first field may comprise the first TCI state index indicating/identifying the first TCI state. The first field may occur/be (or be located) in a first octet of the control command. A second field of the plurality of fields may indicate the second TCI state. For example, the second field may comprise the second TCI state index indicating/identifying the second TCI state. The second field may occur/be (or be located) in a second octet of the control command. The first octet may be lower/less than the second octet. For example, the first octet may be Octet 5, and the second octet may be Octet 6. For example, the first octet may be Octet 1, and the second octet may be Octet 2. For example, the first octet may be Octet 8, and the second octet may be Octet 10.
The control command (e.g., activation command 1720) may indicate/map/activate a list/set/vector of the at least two TCI states in/to/for the TCI codepoint. The control command may indicate mapping/association/activation of the list/set/vector of the at least two TCI states to/for the TCI codepoint. The at least two TCI states may comprise the first TCI state and the second TCI state. The first TCI state may occur first in the list/set/vector of the at least two TCI states. The first TCI state may be a first/starting/earliest/initial TCI state in the list/set/vector of the at least two TCI states. The second TCI state may occur second in the list/set/vector of the at least two TCI states. The second TCI state may be a last/latest/ending TCI state in the list/set/vector of the at least two TCI states.
The one or more configuration parameters may indicate a plurality of uplink power control sets (e.g., Uplink-powerControl). The one or more configuration parameters may comprise one or more serving cell parameters (e.g., ServingCellConfig) indicating, for example, the plurality of uplink power control sets. The one or more configuration parameters may indicate, for the plurality of uplink power control sets, a plurality of uplink power control set indexes/identifiers/identities (e.g., Uplink-powerControlId). The one or more configuration parameters may indicate, for each uplink power control set of the plurality of uplink power control sets, a respective uplink power control set index of the plurality of uplink power control set indexes/identifiers/identities. Each uplink power control set of the plurality of uplink power control sets may comprise/indicate respective power control parameters (e.g., target received power, closed-loop index, pathloss compensation factor, alpha, pathloss reference signal, and the like). For example, the plurality of uplink power control sets may comprise a first uplink power control set. The first uplink power control set may comprise/indicate one or more first power control parameters (e.g., target received power, closed-loop index, pathloss compensation factor, alpha, pathloss reference signal, and the like). The first uplink power control set may be indicated/identified by a first uplink power control set index of the plurality of uplink power control set indexes/identifiers/identities. For example, the plurality of uplink power control sets may comprise a second uplink power control set. The second uplink power control set may comprise/indicate one or more second power control parameters (e.g., target received power, closed-loop index, pathloss compensation factor, alpha, pathloss reference signal, and the like). The second uplink power control set may be indicated/identified by a second uplink power control set index of the plurality of uplink power control set indexes/identifiers/identities.
The one or more configuration parameters may not indicate, for the plurality of TCI states (or the second plurality of TCI states), an uplink power control set index of the plurality of uplink power control set indexes. The one or more configuration parameters may not indicate, for each TCI state of the plurality of TCI states (or of the second plurality of TCI states), an uplink power control set index of the plurality of uplink power control set indexes. The plurality of TCI states (or the second plurality of TCI states) may not comprise/have/indicate an uplink power control set index of the plurality of uplink power control set indexes. Each TCI state of the plurality of TCI states (or of the second plurality of TCI states) may not comprise/have/indicate an uplink power control set index of the plurality of uplink power control set indexes.
The one or more configuration parameters may not indicate, for the subset of TCI states, an uplink power control set index of the plurality of uplink power control set indexes. The one or more configuration parameters may not indicate, for each TCI state of the subset of TCI states, an uplink power control set index of the plurality of uplink power control set indexes. The subset of TCI states may not comprise/have/indicate an uplink power control set index of the plurality of uplink power control set indexes. Each TCI state of the subset of TCI states may not comprise/have/indicate an uplink power control set index of the plurality of uplink power control set indexes.
The one or more configuration parameters may not indicate, for the first TCI state, an uplink power control set index of the plurality of uplink power control set indexes. The first TCI state may not comprise/have/indicate an uplink power control set index of the plurality of uplink power control set indexes.
The one or more configuration parameters may not indicate, for the second TCI state, an uplink power control set index of the plurality of uplink power control set indexes. The second TCI state may not comprise/have/indicate an uplink power control set index of the plurality of uplink power control set indexes.
The one or more configuration parameters may indicate/comprise, for the (active) uplink BWP of the cell, at least two uplink power control set indexes. The plurality of uplink power control set indexes may comprise the at least two uplink power control set indexes. The one or more configuration parameters may comprise dedicated uplink BWP configuration parameters (e.g., IE BWP-UplinkDedicated, UL BWP in
The at least two uplink power control set indexes may comprise a first uplink power control set index (e.g., Uplink-powerControlId, ul-powerControl) and a second uplink power control set index (e.g., Uplink-powerControlId, ul-powerControl2). The first uplink power control set index may indicate/identify a first uplink power control set (e.g., UL power control 1 in
The one or more configuration parameters may indicate/comprise, for the (active) uplink BWP of the cell, a list/vector/sequence of the at least two uplink power control set indexes. The first uplink power control set index indicating/identifying the first uplink power control set (e.g., UL power control 1 in
The second uplink power control set index indicating/identifying the second uplink power control set (e.g., UL power control 2 in
The first uplink power control set (e.g., UL power control 1 in
The second uplink power control set (e.g., UL power control 2 in
The one or more configuration parameters may indicate, for one or more uplink power control sets of the plurality of uplink power control sets, the at least one additional PCI index. The one or more configuration parameters may indicate, for each uplink power control set of the one or more uplink power control sets, a respective additional PCI index of the at least one additional PCI index.
The one or more configuration parameters may indicate, for a first uplink power control set of the one or more uplink power control sets, a first additional PCI index of the at least one additional PCI index. The first uplink power control set may comprise/have/indicate the first additional PCI index. The first additional PCI index may indicate/identify a first PCI set of the list of PCI sets. The first PCI set may comprise/indicate/have a first PCI of the at least one PCI. The first PCI may indicate/identify a first cell of the at least one cell. The first uplink power control set may be associated with the first PCI. The wireless device may determine, for transmission of an uplink signal, a transmission power. The transmission power may be determined based on the first uplink power control set, for example, if the transmission of the uplink signal is associated with a TCI state associated with the first PCI. The transmission power may be determined based on the first uplink power control set, for example, if the wireless device sends (e.g., transmits) the uplink signal based on a TCI state associated with the first PCI. The transmission power may be determined based on the first uplink power control set, for example, if the wireless device is configured/indicated to send (e.g., transmit) the uplink signal based on a TCI state associated with the first PCI.
The one or more configuration parameters may indicate, for a second uplink power control set of the one or more uplink power control sets, a second additional PCI index of the at least one additional PCI index. The second uplink power control set may comprise/have/indicate the second additional PCI index. The second additional PCI index may indicate/identify a second PCI set of the list of PCI sets. The second PCI set may comprise/indicate/have a second PCI of the at least one PCI. The second PCI may indicate/identify a second cell of the at least one cell. The second uplink power control set may be associated with the second PCI. The wireless device may determine, for transmission of an uplink signal, a transmission power. The transmission power may be determined based on the second uplink power control set, for example, if the transmission of the uplink signal is associated with a TCI state associated with the second PCI. The transmission power may be determined based on the second uplink power control set, for example, if the wireless device sends (e.g., transmits) the uplink signal based on a TCI state associated with the second PCI. The transmission power may be determined based on the second uplink power control set, for example, if the wireless device is configured/indicated to send (e.g., transmit) the uplink signal based on a TCI state associated with the second PCI.
The wireless device may send (e.g., transmit) the uplink signal/transmission based on at least one of the first TCI state (e.g., TCI state 26) and the second TCI state (e.g., TCI state 61), for example, after the first TCI state and the second TCI state is activated. As shown in
The wireless device may send (e.g., transmit) a first uplink signal/transmission (e.g., PUSCH/PUCCH/SRS transmission, transport block, UCI, and the like) based on the first TCI state. The wireless device may send (e.g., transmit) the first uplink signal/transmission, for example, with/using a first spatial domain transmitting/transmission filter/beam determined based on the first TCI state. The first spatial domain transmission filter/beam may be determined, for example, based on the first reference signal indicated by the first TCI state.
The first spatial domain transmitting/transmission filter/beam may be, for example, same as (or substantially same as, x degrees apart, x=0, 1, 5, 10, and the like) a spatial domain reception/receiving filter/beam used to receive the first reference signal. The first spatial domain transmitting/transmission filter/beam may be, for example, same as (or substantially same as, x degrees apart, x=0, 1, 5, 10, and the like) a spatial domain transmission/transmitting filter/beam used to send (e.g., transmit) the first reference signal.
At least one DMRS antenna port of the first uplink signal/transmission may be quasi co-located with the first reference signal indicated by the first TCI state. The at least one DMRS antenna port of the first uplink signal/transmission may be quasi co-located with the first reference signal with respect to the first quasi co-location type (e.g., QCL TypeA, QCL Type B, QCL type C, QCL TypeD) indicated by the first TCI state.
The wireless device may send (e.g., transmit) the first uplink signal/transmission, for example, with/using a first transmission power.
The wireless device may transmit the first uplink signal/transmission with/using the first transmission power, for example, determined based on the first TCI state. As described herein, the first TCI state may be mapped to (or be associated with) the first uplink power control set. The wireless device may determine, for the first uplink signal/transmission, the first transmission power based on the one or more first power control parameters indicated by the first uplink power control set, for example, based on (e.g., in response to) the first TCI state being mapped to (or being associated with) the first uplink power control set.
The first uplink power control set (e.g., UL power control 1) may comprise/indicate one or more first power control parameters (e.g., target received power, closed-loop index, pathloss compensation factor, alpha, pathloss reference signal, and the like). The wireless device may determine, for the first uplink signal/transmission, the first transmission power based on the one or more first power control parameters indicated by (or included in or associated with) the first uplink power control set. The wireless device may determine, for the first uplink signal/transmission, the first transmission power based on the one or more first power control parameters indicated by the first uplink power control set, for example, based on (e.g., in response to) the one or more configuration parameters not indicating, for the first TCI state, an uplink power control set index of the plurality of uplink power control set indexes. The wireless device may determine, for the first uplink signal/transmission, the first transmission power based on the one or more first power control parameters indicated by (or included in or associated with) the first uplink power control set, for example, based on (e.g., in response to) the first uplink signal/transmission being associated with a first CORESET pool index (e.g., CoresetPoolIndex=0).
The first TCI state may be mapped to (or be associated with) the first uplink power control set, for example, based on the first TCI state index of the first TCI state being lower/less than the second TCI state index of the second TCI state.
The first TCI state may be mapped to (or be associated with) the first uplink power control set, for example, based on the first octet indicating the first TCI state being lower/less than the second octet indicating the second TCI state. The control command indicating activation of the subset of TCI states may comprise the first octet and the second octet.
The first TCI state may be mapped to (or be associated with) the first uplink power control set, for example, based on the first TCI state occurring first in the list/set/vector of the at least two TCI states (or in the TCI codepoint). The first TCI state may be mapped to (or be associated with) the first uplink power control set, for example, based on the first TCI state being the first/starting/earliest/initial TCI state in the list/set/vector of the at least two TCI states (or in the TCI codepoint).
The first TCI state may be mapped to (or be associated with) the first uplink power control set, for example, based on the first TCI state and the first uplink power control set being associated with the PCI of the cell. The first TCI state may be mapped to (or be associated with) the first uplink power control set, for example, based on the first TCI state and the first uplink power control set being associated with the same PCI.
The first TCI state may be mapped to (or be associated with) the first uplink power control set, for example, based on the first uplink power control set index indicating/identifying the first uplink power control set being lower/less than the second uplink power control set index indicating/identifying the second uplink power control set.
The first TCI state may be mapped to (or be associated with) the first uplink power control set, for example, based on the first uplink power control set index indicating/identifying the first uplink power control set occurring first in the list/vector/sequence of the at least two uplink power control set indexes. The first TCI state may be mapped to (or be associated with) the first uplink power control set, for example, based on the first uplink power control set index being the starting/earliest/initial/first uplink power control set index in the list/vector/sequence of the at least two uplink power control set indexes.
The one or more configuration parameters may indicate, for the first TCJ state, a first pathloss reference signal index (e.g., pathlossReferenceRS-Id) indicating/identifying a first pathloss reference signal. The first TCJ state may comprise/have/indicate the first pathloss reference signal index indicating/identifying the first pathloss reference signal. The one or more configuration parameters may indicate, for the first pathloss reference signal, the first pathloss reference signal index. The first TCJ state may indicate (or comprise or be mapped to or be associated with) the first pathloss reference signal. The wireless device may determine, for the first uplink signal/transmission, the first transmission power based on the first pathloss reference signal indicated by (or associated with) the first TCJ state.
The wireless device may send (e.g., transmit) a second uplink signal/transmission (e.g., PUSCH/PUCCH/SRS transmission, transport block, UCI, and the like) based on the second TCJ state. The wireless device may send (e.g., transmit) the second uplink signal/transmission, for example, with/using a second spatial domain transmitting/transmission filter/beam determined based on the second TCJ state. The wireless device may determine the second spatial domain transmission filter/beam. The second domain transmission filter/beam may be determined based on the second reference signal indicated by the second TCJ state.
The second spatial domain transmitting/transmission filter/beam may be, for example, same as (or substantially same as, x degrees apart, x=0, 1, 5, 10, and the like) a spatial domain reception/receiving filter/beam used to receive the second reference signal. The second spatial domain transmitting/transmission filter/beam may be, for example, same as (or substantially same as, x degrees apart, x=0, 1, 5, 10, and the like) a spatial domain transmission/transmitting filter/beam used to send (e.g., transmit) the second reference signal.
At least one DMRS antenna port of the second uplink signal/transmission may be quasi co-located with the second reference signal indicated by the second TCJ state. The at least one DMRS antenna port of the second uplink signal/transmission may be quasi co-located with the second reference signal with respect to the second quasi co-location type (e.g., QCL TypeA, QCL Type B, QCL type C, QCL TypeD) indicated by the second TCJ state.
The wireless device may send (e.g., transmit) the second uplink signal/transmission, for example, with/using a second transmission power. The second transmission power may be determined, for example, based on the second TCI state. The second TCI state may be mapped to (or be associated with) the second uplink power control set. The wireless device may determine, for the second uplink signal/transmission, the second transmission power based on the one or more second power control parameters indicated by the second uplink power control set, for example, based on (e.g., in response to) the second TCI state being mapped to (or being associated with) the second uplink power control set.
The second uplink power control set (e.g., UL power control 2 in
The wireless device may determine, for the second uplink signal/transmission, the second transmission power based on the one or more second power control parameters indicated by (or included in or associated with) the second uplink power control set, for example, based on (e.g., in response to) the second uplink signal/transmission being associated with a second CORESET pool index (e.g., CoresetPoolIndex=1).
The second TCI state may be mapped to (or be associated with) the second uplink power control set, for example, based on the first TCI state index of the first TCI state being lower/less than the second TCI state index of the second TCI state. The second TCI state may be mapped to (or be associated with) the second uplink power control set, for example, based on the second TCI state index of the second TCI state being higher/greater than the second TCI state index of the second TCI state.
The second TCI state may be mapped to (or be associated with) the second uplink power control set, for example, based on the first octet indicating the first TCI state being lower/less than the second octet indicating the second TCI state. The second TCI state may be mapped to (or be associated with) the second uplink power control set, for example, based on the second octet indicating the second TCI state being higher/greater than the first octet indicating the first TCI state. The control command indicating activation of the subset of TCI states may comprise the first octet and the second octet.
The second TCI state may be mapped to (or be associated with) the second uplink power control set, for example, based on the second TCI state occurring last in the list/set/vector of the at least two TCI states (or in the TCI codepoint). The second TCI state may be mapped to (or be associated with) the second uplink power control set, for example, based on the second TCI state occurring second in the list/set/vector of the at least two TCI states (or in the TCI codepoint). The second TCI state may be mapped to (or be associated with) the second uplink power control set, for example, based on the second TCI state being the second/last/ending/latest TCI state in the list/set/vector of the at least two TCI states (or in the TCI codepoint).
The second TCI state may be mapped to (or be associated with) the second uplink power control set, for example, based on the second TCI state and the second uplink power control set being associated with the second PCI. The second PCI may be different from the PCI of the cell. The second TCI state may be mapped to (or be associated with) the second uplink power control set, for example, based on the second TCI state and the second uplink power control set being associated with the same PCI.
The second TCI state may be mapped to (or be associated with) the second uplink power control set, for example, based on the first uplink power control set index indicating/identifying the first uplink power control set being lower/less than the second uplink power control set index indicating/identifying the second uplink power control set. The second TCI state may be mapped to (or be associated with) the second uplink power control set, for example, based on the second uplink power control set index indicating/identifying the second uplink power control set being higher/greater than the first uplink power control set index indicating/identifying the first uplink power control set.
The second TCI state may be mapped to (or be associated with) the second uplink power control set, for example, based on the second uplink power control set index indicating/identifying the second uplink power control set occurring second in the list/vector/sequence of the at least two uplink power control set indexes. The second TCI state may be mapped to (or be associated with) the second uplink power control set, for example, based on the second uplink power control set index indicating/identifying the second uplink power control set occurring last in the list/vector/sequence of the at least two uplink power control set indexes. The second TCI state may be mapped to (or be associated with) the second uplink power control set, for example, based on the second uplink power control set index being the last/latest/ending/second uplink power control set index in the list/vector/sequence of the at least two uplink power control set indexes.
The one or more configuration parameters may indicate, for the second TCI state, a second pathloss reference signal index (e.g., pathlossReferenceRS-Id) indicating/identifying a second pathloss reference signal. The second TCI state may comprise/have/indicate the second pathloss reference signal index indicating/identifying the second pathloss reference signal. The one or more configuration parameters may indicate, for the second pathloss reference signal, the second pathloss reference signal index. The second TCI state may indicate (or comprise or be mapped to or be associated with) the second pathloss reference signal. The wireless device may determine, for the second uplink signal/transmission, the second transmission power based on the second pathloss reference signal indicated by (or associated with) the second TCI state.
The first uplink signal/transmission and the second uplink signal/transmission may be different. The first uplink signal/transmission may be transmission of a first portion (e.g., first data layer(s)/streams) of an uplink signal. The second uplink signal/transmission may be transmission of a second portion (e.g., second data layer(s)/streams) of the uplink signal.
The first uplink signal/transmission and the second uplink signal/transmission may be the same. The first uplink signal/transmission and the second uplink signal/transmission may be repetitions of an uplink transmission (e.g., PUSCH/PUCCH repetition, repetition of a transport block, etc.). The repetitions may be, for example, in frequency domain (e.g., FDM). The repetitions may be, for example, in time domain (e.g., TDM). The repetitions may be, for example, in spatial domain (e.g., SDM, SFN).
The wireless device may send (e.g., transmit) the first uplink signal/transmission, for example, between time T2 and time T3 in
The wireless device may receive DCI 1740 as shown in
A value of the TCI field may indicate (or be equal to) the TCI codepoint. The TCI codepoint may comprise/indicate a TCI state. For example, as shown in
The TCI state may comprise/indicate a reference signal (e.g., CSI-RS, SSB/PBCH block, DM-RS, SRS, and the like). The TCI state may comprise/indicate a quasi co-location type (e.g., QCL TypeA, QCL TypeB, QCL TypeC, QCL TypeD).
The one or more configuration parameters may not indicate, for the TCI state, an uplink power control set index of the plurality of uplink power control set indexes. The TCI state may not comprise/have/indicate an uplink power control set index of the plurality of uplink power control set indexes.
The wireless device may send (e.g., transmit) an uplink signal/transmission (e.g., PUSCH/PUCCH/SRS transmission, transport block, UCI, and the like) based on the TCI state. The wireless device may send (e.g., transmit) the uplink signal/transmission, for example, with/using a spatial domain transmitting/transmission filter/beam determined based on the TCI state. The wireless device may determine the spatial domain transmission filter/beam determined based on the reference signal indicated by the TCI state.
The wireless device may send (e.g., transmit) the uplink signal/transmission, for example, for a configured uplink grant. The configured uplink grant may be, for example, a Type 1 configured uplink grant. The configured uplink grant may be, for example, a Type 2 configured uplink grant.
At least one DMRS antenna port of the uplink signal/transmission may be quasi co-located with the reference signal indicated by the TCI state. The at least one DMRS antenna port of the uplink signal/transmission may be quasi co-located with the reference signal with respect to the quasi co-location type (e.g., QCL TypeA, QCL Type B, QCL type C, QCL TypeD) indicated by the TCI state.
The wireless device may send (e.g., transmit) the uplink signal/transmission, for example, with/using a transmission power. The wireless device may determine/calculate/compute the transmission power, for example, based on an uplink power control set (e.g., the first uplink power control set, the second uplink power control set, a default power control set, etc.) among the at least two uplink power control sets (e.g., UL power control 1 and UL power control 2 in
The wireless device may determine/calculate/compute the transmission power based on the uplink power control set, for example, based on (e.g., in response to) the DCI (e.g., DCI 1740 in
The wireless device may determine/calculate/compute the transmission power based on the uplink power control set among the at least two uplink power control sets. The wireless device may determine the at least two uplink power control sets, for example, based on (e.g., in response to) the one or more configuration parameters indicating, for the active uplink BWP of the cell, the at least two uplink power control set indexes. The wireless device may send (e.g., transmit) the uplink signal/transmission with/using the transmission power determined based on the uplink power control set, for example, based on (e.g., in response to) the one or more configuration parameters indicating, for the active uplink BWP of the cell, the at least two uplink power control set indexes.
The wireless device may determine/select, for transmission of the uplink signal/transmission, the uplink power control set among the at least two uplink power control sets. The wireless device may determine/select, for transmission of the uplink signal/transmission, the uplink power control set among the at least two uplink power control sets, for example, based on the DCI (e.g., DCI 1740 in
The wireless device may send (e.g., transmit) the uplink signal/transmission with/using the transmission power determined based on the uplink power control set, for example, after time T3 in
For example, the wireless device may send (e.g., transmit) the uplink signal/transmission with/using a first transmission power determined based on the one or more first power control parameters indicated by (or included in or associated with) the first uplink power control set, for example, if the uplink power control set is the first uplink power control set (e.g., UL power control 1 in
The wireless device may send (e.g., transmit) the uplink signal/transmission with/using a second transmission power determined based on the one or more second power control parameters indicated by (or included in or associated with) the second uplink power control set, for example, if the uplink power control set is the second uplink power control set (e.g., UL power control 2). The wireless device may not send (e.g., transmit) a first uplink signal/transmission with/using a first transmission power determined based on the one or more first power control parameters indicated by (or included in or associated with) the first uplink power control set (e.g., UL power control 1).
The uplink power control set may be a default/reference uplink power control set among the at least two uplink power control sets. The uplink power control set may be a default/reference uplink power control set among the at least two uplink power control sets, for example, if the wireless device receives DCI 1740 indicating activation of a single TCI state.
The uplink power control set may be an uplink power control set, among the at least two uplink power control sets, with a lowest uplink power control set index among the at least two uplink power control set indexes of the at least two uplink power control sets. The one or more configuration parameters may indicate, for the uplink power control set among the at least two uplink power control sets, an uplink power control set index that is lowest among the at least two uplink power control set indexes. The wireless device may send (e.g., transmit) the uplink signal/transmission with/using the transmission power determined based on the uplink power control set, for example, based on (e.g., in response to) the one or more configuration parameters indicating, for the uplink power control set, the uplink power control set index that is lowest among the at least two uplink power control set indexes. The wireless device may determine, for the uplink signal/transmission, the transmission power based on the uplink power control set, for example, based on (e.g., in response to) the one or more configuration parameters indicating, for the uplink power control set, the uplink power control set index that is lowest among the at least two uplink power control set indexes.
The uplink power control set may be an uplink power control set, among the first uplink power control set and the second uplink power control set, with a lowest uplink power control set index among the first uplink power control set index of the first uplink power control set and the second uplink power control set index of the second uplink power control set. The one or more configuration parameters may indicate, for the uplink power control set among the first uplink power control set and the second uplink power control set, an uplink power control set index that is lowest among the first uplink power control set index and the second uplink power control set index. For example, the first uplink power control set index of the first uplink power control set may be lower/less than the second uplink power control set index of the second uplink power control set. The uplink power control set may be determined as the first uplink power control set, for example, based on the first uplink power control set index of the first uplink power control set being lower/less than the second uplink power control set index of the second uplink power control set. The wireless device may determine, for transmission of the uplink signal/transmission, the transmission power based on the first uplink power control set, for example, based on (e.g., in response to) the first uplink power control set index of the first uplink power control set being lower/less than the second uplink power control set index of the second uplink power control set. The wireless device may send (e.g., transmit) the uplink signal/transmission with/using the transmission power determined based on the first uplink power control set, for example, based on (e.g., in response to) the first uplink power control set index of the first uplink power control set being lower/less than the second uplink power control set index of the second uplink power control set.
The uplink power control set may be identified by an uplink power control set index that occurs first among/in the list/vector/sequence of the at least two uplink power control set indexes. The at least two uplink power control set indexes may comprise the uplink power control set index of the uplink power control set. The uplink power control set index of the uplink power control set may be a starting/earliest/initial/first uplink power control set index in the list/vector/sequence of the at least two uplink power control set indexes. The wireless device may send (e.g., transmit) the uplink signal/transmission with/using the transmission power determined based on the identified uplink power control set, for example, based on (e.g., in response to) the uplink power control set index of the uplink power control set occurring first among/in the list/vector/sequence of the at least two uplink power control set indexes. The wireless device may determine, for the uplink signal/transmission, the transmission power based on the uplink power control set, for example, based on (e.g., in response to) the uplink power control set index of the uplink power control set occurring first among/in the list/vector/sequence of the at least two uplink power control set indexes. For example, the first uplink power control set index indicating/identifying the first uplink power control set may occur first in the list/vector/sequence of the at least two uplink power control set indexes. The first uplink power control set index may be a starting/earliest/initial/first uplink power control set index in the list/vector/sequence of the at least two uplink power control set indexes. The uplink power control set may be determined as the first uplink power control set, for example, based on the first uplink power control set index occurring first in the list/set/vector of the at least two uplink power control set indexes. The uplink power control set may be determined as the first uplink power control set, for example, based on the first uplink power control set index being the starting/earliest/initial/first uplink power control set index in the list/vector/sequence of the at least two uplink power control set indexes.
The wireless device may determine, for transmission of the uplink signal/transmission, the transmission power based on the first uplink power control set, for example, based on (e.g., in response to) the first uplink power control set index being the starting/earliest/initial/first uplink power control set index in the list/vector/sequence of the at least two uplink power control set indexes. The wireless device may send (e.g., transmit) the uplink signal/transmission with/using the transmission power determined based on the first uplink power control set, for example, based on (e.g., in response to) the first uplink power control set index being the starting/earliest/initial/first uplink power control set index in the list/vector/sequence of the at least two uplink power control set indexes.
The TCI state (e.g., TCI state 42 in
The uplink power control set may be determined as the first uplink power control set, for example, based on the TCI state being associated with the PCI of the cell. The uplink power control set may be determined as the first uplink power control set, for example, based on the first uplink power control set being associated with the PCI of the cell. The uplink power control set may be determined as the first uplink power control set, for example, based on both the TCI state and the first uplink power control set being associated with the PCI of the cell.
The wireless device may determine, for transmission of the uplink signal/transmission, the transmission power based on the first uplink power control set, for example, based on (e.g., in response to) the TCI state being associated with the PCI of the cell. The wireless device may determine, for transmission of the uplink signal/transmission, the transmission power based on the first uplink power control set, for example, based on (e.g., in response to) the first uplink power control set being associated with the PCI of the cell. The wireless device may determine, for transmission of the uplink signal/transmission, the transmission power based on the first uplink power control set, for example, based on (e.g., in response to) both the TCI state and the first uplink power control set being associated with the PCI of the cell.
The wireless device may send (e.g., transmit) the uplink signal/transmission with/using the transmission power determined based on the first uplink power control set, for example, based on (e.g., in response to) the TCI state being associated with the PCI of the cell. The wireless device may send (e.g., transmit) the uplink signal/transmission with/using the transmission power determined based on the first uplink power control set, for example, based on (e.g., in response to) the first uplink power control set being associated with the PCI of the cell. The wireless device may send (e.g., transmit) the uplink signal/transmission with/using the transmission power determined based on the first uplink power control set, for example, based on (e.g., in response to) both the TCI state and the first uplink power control set being associated with the PCI of the cell.
The TCI state may be associated with a second PCI. The second PCI may indicate/identify a second cell. The at least one cell of the one or more cells may comprise the second cell. The at least one PCI in (or indicated by) the list of PCI sets may comprise the second PCI. The TCI state may comprise/have an additional PCI index of the at least one additional PCI index. The one or more configuration parameters may indicate, for the TCI state, the additional PCI index. The additional PCI index may indicate a PCI set of the list of PCI sets. The PCI set may comprise/indicate/have the second PCI. The TCI state may be associated with the second PCI, for example, based on the TCI state comprising/having the additional PCI index indicating the second PCI of the second cell. The TCI state may be associated with the second PCI, for example, based on the one or more configuration parameters indicating, for the TCI state, the additional PCI index that indicates the second PCI. The second PCI may be different from the PCI of the cell.
The uplink power control set may be, for example, the second uplink power control set based on the TCI state being associated with the second PCI different from the PCI of the cell. The uplink power control set may be determined as the second uplink power control set, for example, based on the second uplink power control set being associated with the second PCI different from the PCI of the cell. The uplink power control set may be determined as the second uplink power control set, for example, based on both the TCI state and the second uplink power control set being associated with the same PCI (e.g., the second PCI). The second PCI associated with the second uplink power control set may be same as the second PCI associated with the TCI state. The second cell identified/indicated by the second PCI associated with the second uplink power control set may be same as the second cell identified/indicated by the second PCI associated with the TCI state.
The wireless device may determine, for transmission of the uplink signal/transmission, the transmission power based on the second uplink power control set, for example, based on (e.g., in response to) the TCI state being associated with the second PCI different from the PCI of the cell. The wireless device may determine, for transmission of the uplink signal/transmission, the transmission power based on the second uplink power control set, for example, based on (e.g., in response to) the second uplink power control set being associated with the second PCI different from the PCI of the cell. The wireless device may determine, for transmission of the uplink signal/transmission, the transmission power based on the second uplink power control set, for example, based on (e.g., in response to) both the TCI state and the second uplink power control set being associated with the same PCI (e.g., the second PCI of the second cell).
The wireless device may send (e.g., transmit) the uplink signal/transmission with/using the transmission power determined based on the second uplink power control set, for example, based on (e.g., in response to) the TCI state being associated with the second PCI different from the PCI of the cell. The wireless device may send (e.g., transmit) the uplink signal/transmission with/using the transmission power determined based on the second uplink power control set, for example, based on (e.g., in response to) the second uplink power control set being associated with the second PCI different from the PCI of the cell. The wireless device may send (e.g., transmit) the uplink signal/transmission with/using the transmission power determined based on the second uplink power control set, for example, based on (e.g., in response to) both the TCI state and the second uplink power control set being associated with the same PCI (e.g., the second PCI of the second cell).
The one or more configuration parameters may indicate, for the (active) uplink BWP of the cell, a list of additional PCI indexes. The at least one additional PCI index may comprise each additional PCI index in/of the list of additional PCI indexes. For example, the at least one additional PCI index may comprise the list of additional PCI indexes. The list of additional PCI indexes may comprise one or more additional PCI indexes in/of the at least one additional PCI index. For example, the at least one additional PCI index may be [0, 1, 2, 3, 4] and the list of additional PCI indexes may be [1 0 4 3 3 1 2 0 2].
A size/length of the list of additional PCI indexes may be based on a quantity of uplink power sets in the plurality of uplink power control sets. The size/length of the list of additional PCI indexes may be same as the number/quantity of uplink power sets in the plurality of uplink power control sets. Each additional PCI index in the list of additional PCI indexes may be associated with a respective uplink power control set of the plurality of uplink power control sets. A first additional PCI index in the list of additional PCI indexes may be associated with a first uplink power control set of the plurality of uplink power control sets. The first additional PCI index may be one-to-one associated with (or mapped to) the first uplink power control set. The first additional PCI index may not be associated with (or mapped to) a second uplink power control set of the plurality of uplink power control sets. Association between the list of additional PCI indexes and the plurality of uplink power control sets may be based on positions. For example, the list of additional PCI indexes may be [1 0 4 3 2] and the plurality of uplink power control sets may be [UL power control 1, UL power control 2, UL power control 3, UL power control 4, UL power control 5]. UL power control 1 may be associated with (or mapped to) 1. UL power control 2 may be associated with (or mapped to) 0. UL power control 3 may be associated with (or mapped to) 4. UL power control 4 may be associated with (or mapped to) 3. UL power control 5 may be associated with (or mapped to) 2.
The at least two uplink power control sets may be associated with the list of PCI sets. A number/quantity of uplink power control sets in the at least two uplink power control sets may be based on a number/quantity of PCI sets in the list of PCI sets. For example, the number/quantity of the at least two uplink power control sets may be equal to the quantity/number of PCI sets in the list of PCI set. For example, the number/quantity of the at least two uplink power control sets may be equal to the number/quantity of PCI sets in the list of PCI set plus one.
A starting/earliest/first uplink power control set of the at least two uplink power control sets may be associated with the PCI of the cell (e.g., the serving cell). A second/second starting/second earliest uplink power control set of the at least two uplink power control sets may be associated with a starting/earliest/first PCI set in the list of PCI sets. One or more of the PCI sets in the list of PCI sets may correspond to one or more non-serving cells. A third/third starting/third earliest uplink power control set of the at least two uplink power control sets may be associated with a second/second starting/second earliest PCI set in the list of PCI sets.
For example, the list of PCI sets=[{0, PCI 5}, {1, PCI 2}, {2, PCI 41}, {3, PCI 10}] and the at least two uplink power control sets=[UL power control 1, UL power control 2, UL power control 3, UL power control 4, UL power control 5]. UL power control 1 may be associated with the PCI of the cell. UL power control 2 may be associated with PCI 5 (e.g., indicated by a first PCI set identified by additional PCI index equal to 0). UL power control 3 may be associated with PCI 2 (e.g., indicated by a second PCI set identified by additional PCI index equal to 1). UL power control 4 may be associated with PCI 4 (e.g., indicated by a third PCI set identified by additional PCI index equal to 2). UL power control 5 may be associated with PCI 10 (e.g., indicated by a fourth PCI set identified by additional PCI index equal to 3).
The wireless device may determine the transmission power based on UL power control 1, for example, if the TCI state (e.g., TCI state 42) is associated with the PCI of the cell. The TCI state (e.g., TCI state 42) may be associated with the second PCI. Consistent with the example where the list of PCI sets=[{0, PCI 5}, {1, PCI 2}, {2, PCI 4}, {3, PCI 10}] and the at least two uplink power control sets=[UL power control 1, UL power control 2, UL power control 3, UL power control 4, UL power control 5] described in the above paragraph, the wireless device may determine the transmission power based on UL power control 3, for example, if the second PCI is equal to PCI 2. The wireless device may determine the transmission power based on UL power control 5, for example, if the second PCI is equal to PCI 10.
A starting/earliest/first uplink power control set of the at least two uplink power control sets may be associated with a starting/earliest/first PCI set in the list of PCI sets. A second/second starting/second earliest uplink power control set of the at least two uplink power control sets may be associated with a second/second starting/second earliest PCI set in the list of PCI sets; and so on.
For example, the list of PCI sets=[{0, PCI 5}, {1, PCI 2}, {2, PCI 4}, {3, PCI 10}] and the at least two uplink power control sets=[UL power control 1, UL power control 2, UL power control 3, UL power control 4]. UL power control 1 may be associated with PCI 5 (e.g., indicated by a first PCI set identified by additional PCI index equal to 0). UL power control 2 may be associated with PCI 2 (e.g., indicated by a second PCI set identified by additional PCI index equal to 1). UL power control 3 may be associated with PCI 4 (e.g., indicated by a third PCI set identified by additional PCI index equal to 2). UL power control 4 may be associated with PCI 10 (e.g., indicated by a fourth PCI set identified by additional PCI index equal to 3).
The TCI state (e.g., TCI state 42) may be associated with the second PCI. Consistent with the example where the list of PCI sets=[{0, PCI 5}, {1, PCI 2}, {2, PCI 4}, {3, PCI 10}] and the at least two uplink power control sets=[UL power control 1, UL power control 2, UL power control 3, UL power control 4] in the above paragraph, the wireless device may determine the transmission power based on UL power control 2, for example, if the second PCI is equal to PCI 2. The wireless device may determine the transmission power based on UL power control 4, for example, if the second PCI is equal to PCI 10.
The one or more configuration parameters may indicate at least two uplink power control sets. For example, the at least two uplink power control sets may be the at least two uplink power control sets in
At step 1820, the wireless device may receive a control command (e.g., DCI 1720, MAC-CE). The base station may send (e.g., transmit) the control command. The control command may indicate activation of at least two TCI states. The plurality of TCI states may comprise the at least two TCI states. The at least two TCI states may comprise a first TCI state and a second TCI state.
At step 1830, the wireless device may determine a DCI indicates/selects a single TCI state or at least two TCI states. If the wireless device determines at least two TCI states are indicated/selected, the method may proceed to step 1840. If the wireless device determines that a single TCI state is indicated/selected, the method may proceed to step 1850.
At step 1840, the wireless device may send (e.g., transmit) a first uplink signal/transmission (e.g., PUCCH/PUSCH/SRS transmission). The base station may receive the first uplink signal/transmission. The wireless device may send (e.g., transmit) the first uplink signal/transmission based on the first TCI state (e.g., TCI state 26 in
The wireless device may send (e.g., transmit) a second uplink signal/transmission (e.g., PUCCH/PUSCH/SRS transmission). The base station may receive the second uplink signal/transmission. The wireless device may send (e.g., transmit) the second uplink signal/transmission based on the second TCI state (e.g., TCI state 61 in
At step 1850, the wireless device may send (e.g., transmit) an uplink signal/transmission (e.g., PUCCH/PUSCH/SRS transmission). The base station may receive the uplink signal/transmission. The wireless device may send (e.g., transmit) the uplink signal/transmission based on the TCI state (e.g., the TCI state 42 in
At step 1970, the wireless device may receive first DCI (e.g., DCI 1930). The first DCI may indicate activation of at least two TCI states. For example, as shown in
At step 1975, the wireless device may receive/detect DCI 1940. The DCI 1940 may be received at time T3. The wireless device may receive/detect DCI 1940 via a CORESET of the plurality of CORESETS. The wireless device may receive (e.g., via the CORESET) the DCI 1940 in a PDCCH monitoring occasion. The base station 1902 may send (e.g., transmit) the DCI 1940 via the CORESET.
The DCI 1940 may schedule transmission/reception of a downlink signal 1960. The DCI 1940 may schedule transmission/reception of the downlink signal 1960 for/via the cell. The DCI 1940 may schedule reception of the downlink signal 1960 for/via the active downlink BWP of the cell.
The downlink signal may be, for example, a PDSCH transmission/reception. The PDSCH transmission/reception may comprise/indicate/carry a transport block. The downlink signal may be, for example, an aperiodic CSI-RS. The downlink signal may be, for example, a semi-persistent CSI-RS.
At step 1980, the wireless device may receive the downlink signal (e.g., downlink signal 1960). The downlink signal may be received at time T4. A time offset (e.g., offset 1950 in
The time offset 1950 may comprise, for example, a time offset between a last/latest/ending symbol of the DCI and a first/earliest/starting symbol of the downlink signal. The time offset 1950 may comprise, for example, a time offset between a last/latest/ending symbol of the DCI and a first/earliest/starting symbol of a resource (e.g., a time/frequency resource or a PDSCH resource or a CSI-RS resource) of (or to receive) the downlink signal. The time offset 1950 may comprise, for example, a time offset between reception of the DCI and a first/earliest/starting symbol of the downlink signal.
The time offset 1950 may comprise, for example, a time offset between a last/latest/ending symbol of the PDCCH monitoring occasion that the DCI is received and a first/earliest/starting symbol of the downlink signal. The time offset 1950 may comprise, for example, a time offset between a last/latest/ending symbol of the PDCCH monitoring occasion that the DCI is received and a first/earliest/starting symbol of a resource (e.g., a time/frequency resource or a PDSCH resource) of (or to receive) the downlink signal.
The time offset 1950 may comprise, for example, a time offset between a last/latest/ending symbol of the CORESET that the DCI is received and a first/earliest/starting symbol of the downlink signal. The time offset 1950 may comprise, for example, a time offset between a last/latest/ending symbol of the CORESET that the DCI is received and a first/earliest/starting symbol of a resource (e.g., a time/frequency resource or a PDSCH resource or a CSI-RS resource) of (or to receive) the downlink signal.
The DCI may indicate the resource to receive the downlink signal. The one or more configuration parameters may indicate the resource to receive the downlink signal.
The time offset 1950 may comprise, for example, a time offset between the DCI and a first/earliest/starting transmission occasion (or repetition) of the downlink signal. The base station may send (e.g., transmit) (or repeat transmission of) the downlink signal in a plurality of transmission occasions (e.g., PDSCH transmission occasions). The plurality of transmission occasions may comprise the first/earliest/starting transmission occasion. The first/earliest/starting transmission occasion may be a first/earliest/starting transmission occasion, among the plurality of transmission occasions, occurring in time. A starting time/symbol of the first/earliest/starting transmission occasion may be the first/earliest among starting times/symbols of the plurality of transmission occasions.
At step 1985, the wireless device may determine whether the time offset 1950 is less/lower than a threshold (e.g., timeDurationForQCL, beamSwitchTiming). If the wireless device determines that the time offset is more/higher than the threshold, the method may proceed to step 1990. At step 1990, the wireless device may receive the downlink signal based on a TCI state of the at least two TCI states. The TCI state may be indicated by the DCI 1940. If the wireless device determines that the time offset is less/lower than the threshold, the method may proceed to step 1995.
Referring back to step 1985, the threshold may be determined in a variety of ways, as described herein. For example, the base station may need (additional) one or more radio access capability information of the wireless device (e.g., UE radio access capability information). The base station may initiate a procedure to request the one or more UE radio access capability information (e.g., by an information element UECapabilityEnquiry) from the wireless device. The wireless device may use an information element (e.g., UECapabilityInformation message) to send (e.g., transfer) one or more UE radio access capability information requested by the base station. The wireless device may provide/indicate the threshold (e.g., timeDurationForQCL, beamSwitchTiming) in FeatureSetDownlink indicating a set of features that the wireless device supports. The wireless device may send (e.g., transmit) a capability information (e.g., UE capability information) indicating the threshold.
The one or more configuration parameters may not comprise a higher layer parameter trs-info for a CSI-RS resource set (e.g., NZP-CSI-RS-ResourceSet) comprising the downlink signal (e.g., aperiodic CSI-RS or aperiodic CSI-RS resource).
For example, a value of the threshold reported by the wireless device (in UE capability information) may be at least one of: {14, 28, 48}. The one or more configuration parameters may not comprise a beam switch timing enabler (e.g., enableBeamSwitchTiming). The threshold may be equal to the value of the threshold reported by the wireless device, for example, if the value of the threshold reported by the wireless device is at least one of: {14, 28, 48}. The threshold may be equal to the value of the threshold reported by the wireless device, for example, if the one or more configuration parameters do not comprise the beam switch timing enabler.
A value of the threshold reported by the wireless device may be at least one of: {224, 336}. The threshold may be equal to 48 symbols if the value of the threshold reported by the wireless device is at least one of: {224, 336}.
The threshold (e.g., timeDurationForQCL) may comprise/indicate a minimum number/quantity of OFDM symbols for the wireless device to perform a PDCCH reception with a first DCI. The threshold may comprise/indicate a minimum number/quantity of OFDM symbols for the wireless device to apply spatial QCL information (e.g., TCI-State) received in (or indicated by) the first DCI for a processing of a first downlink signal scheduled by the first DCI. The wireless device may need the minimum number/quantity of OFDM symbols between the PDCCH reception and the processing of the first downlink signal to apply the spatial QCL information. The spatial QCL information may be indicated by the first DCI to the first downlink signal. The threshold (e.g., beamSwitchTiming) may comprise/indicate a minimum number/quantity of OFDM symbols between the first DCI triggering of the first downlink signal (e.g., aperiodic CSI-RS) and transmission of the first downlink signal. The number/quantity of OFDM symbols may be measured from the last symbol of (or containing) the first DCI to the first/starting symbol of the first downlink signal.
The wireless device may monitor downlink control channels in the CORESET based on a third TCI state (e.g., a default TCI state). The base station may send (e.g., transmit) DCIs (or PDCCH transmissions) in/via the CORESET based on the third TCI state. The at least two TCI states may comprise the third TCI state. The third TCI state may be one of the first TCI state or the second TCI state.
The subset of TCI states (e.g., activated by the activation command 1920) may comprise the third TCI state. The plurality of TCI states (e.g., configured by the configuration parameters 1910) may comprise the third TCI state. The wireless device may receive an activation command 1920 indicating activation of the third TCI state for the CORESET. The activation command may be, for example, different from the DCI 1930 (e.g., e.g., received at time T2). The activation command 1920 may be, for example, same as the DCI 1930 (e.g., received at time T2). The base station may send (e.g., transmit) the activation command 1920 indicating activation of the third TCI state for the CORESET.
The third TCI state of the CORESET may be associated with the PCI of the cell. The one or more configuration parameters may not indicate, for the third TCI state, an additional PCI index of the at least one additional PCI index. The third TCI state may not comprise/have an additional PCI index of the at least one additional PCI index. An additional PCI index may be absent in configuration parameter(s) of the third TCI state. The one or more configuration parameters may comprise the configuration parameter(s) of the third TCI state. The third TCI state may be associated with the PCI of the cell, for example, based on the third TCI state not comprising/having an additional PCI index of the at least one additional PCI index. The third TCI state may be associated with the PCI of the cell, for example, based on the one or more configuration parameters not indicating, for the third TCI state, an additional PCI index of the at least one additional PCI index.
The CORESET may be associated with the PCI of the cell, for example, based on (e.g., in response to) monitoring the downlink control channels in the CORESET based on the third TCI state associated with the PCI of the cell. The CORESET may be associated with the PCI of the cell, for example, based on (e.g., in response to) receiving the activation command indicating activation of the third TCI state for the CORESET. The third TCI state may be associated with the PCI of the cell.
The downlink signal may be associated with the PCI of the cell, for example, based on receiving, via the CORESET associated with the PCI of the cell, the DCI scheduling transmission/reception of the downlink signal. The downlink signal may be associated with the PCI of the cell, for example, based on receiving, via the CORESET with the third TCI state that is associated with the PCI of the cell, the DCI scheduling transmission/reception of the downlink signal.
The third TCI state of the CORESET may be associated with a second PCI. The second PCI may be different from the PCI of the cell. The second PCI may indicate/identify a second cell. The at least one cell of the one or more cells may comprise the second cell. The at least one PCI in (or indicated by) the list of PCI sets may comprise the second PCI. The third TCI state may comprise/have an additional PCI index of the at least one additional PCI index. The one or more configuration parameters may indicate, for the third TCI state, the additional PCI index. The additional PCI index may indicate a PCI set of the list of PCI sets. The PCI set may comprise/indicate/have the second PCI. The third TCI state may be associated with the second PCI, for example, based on the third TCI state comprising/having the additional PCI index indicating the second PCI. The third TCI state may be associated with the second PCI, for example, based on the one or more configuration parameters indicating, for the third TCI state, the additional PCI index that indicates the second PCI. The third TCI state may be associated with the second PCI, for example, based on the one or more configuration parameters indicating, for the third TCI state, the additional PCI index indicating the PCI set that indicates/comprises the second PCI.
The CORESET may be associated with the second PCI, for example, based on (e.g., in response to) monitoring the downlink control channels in the CORESET based on the third TCI state associated with the second PCI. The CORESET may be associated with the second PCI, for example, based on (e.g., after or in response to) receiving the activation command indicating activation of the third TCI state, for the CORESET, associated with the second PCI.
The downlink signal may be associated with the second PCI that is different from the PCI of the cell, for example, based on receiving, via the CORESET associated with the second PCI, the DCI scheduling transmission/reception of the downlink signal. The downlink signal may be associated with the second PCI, for example, based on receiving, via the CORESET with the third TCI state that is associated with the second PCI, the DCI scheduling transmission/reception of the downlink signal.
The one or more configuration parameters may indicate, for the CORESET, one or more search space sets. The wireless device may receive the DCI 1940 (e.g., at time T3 in
At step 1995, the wireless device may receive the downlink signal based on a TCI state among the at least two TCI states (e.g., at time T4 in
The wireless device may receive the downlink signal based on the default TCI state among the at least two TCI states, for example, based on (e.g., in response to) the time offset being less/lower than the threshold. The base station may send (e.g., transmit) the downlink signal based on the default TCI state among the at least two TCI states, for example, if the time offset being less/lower than the threshold.
The wireless device may receive the downlink signal based on the default TCI state among the at least two TCI states, for example, based on (e.g., in response to) the search space set being a common search space set (e.g., Type0-PDCCH CSS set, Type0A-PDCCH CSS set, Type1-PDCCH CSS set, Type2-PDCCH CSS set, Type 3-PDCCH CSS set, and the like). The base station may send (e.g., transmit) the downlink signal based on the TCI state among the at least two TCI states, for example, based on (e.g., in response to) the search space set being a common search space set.
The wireless device may receive the downlink signal based on the default TCI state among the at least two TCI states, for example, based on (e.g., in response to) the DCI being a fallback DCI (e.g., DCI format 1_0). The base station may send (e.g., transmit) the downlink signal based on the TCI state (e.g., a default TCI state) among the at least two TCI states, for example, based on (e.g., in response to) the DCI being a fallback DCI (e.g., DCI format 1_0).
The wireless device may receive the downlink signal based on the TCI state among the at least two TCI states, for example, based on (e.g., in response to) the DCI being a DCI format 1_0. The base station may send (e.g., transmit) the downlink signal based on the TCI state among the at least two TCI states, for example, based on (e.g., in response to) the DCI being a DCI format 1_0.
The one or more configuration parameters may comprise an enabling parameter (e.g., enableDefaultTCI-StatePerPCI, enableDefaultTCI-StatePerCell, enableDefaultTCI-StatePerTRP and the like). The enabling parameter may indicate that the wireless device applies/uses, for reception of downlink signals, a default TCI state per PCI. The wireless device may receive the downlink signal based on the TCI state among the at least two TCI states, for example, based on (e.g., in response to) the one or more configuration parameters comprising the enabling parameter (or set to enabled). The base station may send (e.g., transmit) the downlink signal based on the TCI state among the at least two TCI states, for example, based on (e.g., in response to) the one or more configuration parameters comprising the enabling parameter (or set to enabled).
The wireless device may select/determine, for reception of the downlink signal, the TCI state among the at least two TCI states. The base station may select/determine, for transmission of the downlink signal, the TCI state among the at least two TCI states.
The TCI state may indicate a reference signal (e.g., CSI-RS, SS/PBCH block, DM-RS, TRS, etc.). The one or more configuration parameters may indicate, the reference signal for the TCI state. The TCI state may comprise a reference signal index (e.g., provided by a higher layer parameter referenceSignal, ssb-index, csi-RS-Index, NZP-CSI-RS-ResourceId) identifying (or indicating or of) the reference signal. The one or more configuration parameters may indicate the reference signal index for the reference signal.
The TCI state may indicate a quasi co-location type (e.g., QCL TypeA, QCL TypeB, QCL TypeC, QCL TypeD, etc.). The one or more configuration parameters may indicate the quasi co-location type for the TCI state.
The receiving the downlink signal based on the TCI state (or the antenna port quasi co-location property/assumption) may comprise at least one DM-RS antenna port of the downlink signal being quasi co-located (QCL-ed) with the reference signal indicated by (or in) the TCI state. The at least one DM-RS antenna port of the downlink signal may be quasi co-located (QCL-ed) with the reference signal with respect to at least one of: Doppler shift, Doppler spread, average delay, delay spread, and/or spatial RX parameters. The at least one DM-RS antenna port of the downlink signal may be quasi co-located (QCL-ed) with the reference signal with respect to at least one of: Doppler shift, Doppler spread, average delay, delay spread, and/or spatial RX parameters, if applicable. The at least one DM-RS antenna port of the downlink signal may be quasi co-located (QCL-ed) with the reference signal with respect to Doppler shift, Doppler spread, average delay, delay spread, and/or spatial RX parameters, if applicable. The at least one DM-RS antenna port of the downlink signal may be QCL-ed with the reference signal with respect to the quasi co-location type indicated by (or in) the TCI state.
The receiving the downlink signal based on the TCI state may comprise applying the TCI state (or the antenna port quasi co-location property/assumption) for a reception (or to receive) the downlink signal. The wireless device may measure the downlink signal (e.g., aperiodic CSI-RS) based on the TCI state. The wireless device may measure/determine a radio link quality (e.g., L1-RSRP, L-RSRP, SINR, SNR, BLER) of the downlink signal based on the TCI state. The wireless device may measure a radio link quality (e.g., L1-RSRP, L-RSRP, SINR, SNR, BLER) of the reference signal to determine the radio link quality of the downlink signal. The wireless device may send (e.g., transmit) an uplink report indicating the radio link quality of the downlink signal. The uplink report may be, for example, a CSI report. The uplink report may be, for example, an aperiodic CSI report.
The wireless device may receive/measure the downlink signal with/using a spatial domain receiving/reception filter/beam. The wireless device may determine the spatial domain receiving/reception filter/beam determined based on the reference signal indicated by the TCI state.
The spatial domain receiving/reception filter/beam may be, for example, same as (or substantially same as, x degrees apart, x=0, 1, 5, 10, and the like) a spatial domain reception/receiving filter/beam used to receive the reference signal. The spatial domain receiving/reception filter/beam may be, for example, same as (or substantially same as, x degrees apart, x=0, 1, 5, 10, and the like) a spatial domain transmission/transmitting filter/beam used to send (e.g., transmit) the reference signal.
The base station may send (e.g., transmit) the downlink signal with/using a spatial domain transmitting/transmission filter/beam. The base station may determine the spatial domain transmitting/transmission filter/beam determined based on the reference signal indicated by the TCI state.
The TCJ state may be identified/indicated by a TCJ state index that is lowest among at least two TCJ state indexes of the at least two TCJ states. The at least two TCJ states may comprise the TCJ state. The at least two TCJ state indexes may comprise the TCJ state index. The one or more configuration parameters may indicate, for the TCJ state, the TCJ state index. The one or more configuration parameters may indicate, for the at least two TCJ states, the at least two TCJ state indexes. The one or more configuration parameters may indicate, for each TCJ state of the at least two TCJ states, a respective TCJ state index of the at least two TCJ state indexes. The wireless device may receive the downlink signal based on the TCJ state, for example, based on (e.g., in response to) the TCJ state index of the TCJ state being lowest among the at least two TCJ state indexes of the at least two TCJ states. The base station may send (e.g., transmit) the downlink signal based on the TCJ state, for example, based on (e.g., in response to) the TCJ state index of the TCJ state being lowest among the at least two TCJ state indexes of the at least two TCJ states.
The at least two TCJ state indexes may comprise the first TCJ state index of the first TCJ state and the second TCJ state index of the second TCJ state.
The TCJ state may be a TCJ state, among the first TCJ state and the second TCJ state, with a lowest index among the first TCJ state index of the first TCJ state and the second TCJ state index of the second TCJ state. The one or more configuration parameters may indicate, for the TCJ state among the first TCJ state and the second TCJ state, a TCJ state index that is lowest among the first TCJ state index and the second TCJ state index.
For example, the first TCJ state index of the first TCJ state may be lower/less than the second TCJ state index of the second TCJ state. The TCJ state may be the first TCJ state, for example, based on the first TCJ state index of the first TCJ state being lower/less than the second TCJ state index of the second TCJ state. The wireless device may receive the downlink signal, for example, based on the first TCJ state. The wireless device may receive the downlink signal based on the first TCJ state, for example, based on (e.g., in response to) the first TCJ state index of the first TCJ state being lower/less than the second TCJ state index of the second TCJ state. The base station may send (e.g., transmit) the downlink signal based on the first TCJ state, for example, based on (e.g., in response to) the first TCJ state index of the first TCJ state being lower/less than the second TCJ state index of the second TCJ state.
The first field of the control command indicating activation of the subset of TCI states may comprise the first TCI state index indicating/identifying the first TCI state. The first field may occur/be (or be located) in the first octet of the control command. The second field of the control command may comprise the second TCI state index indicating/identifying the second TCI state. The second field may occur/be (or be located) in the second octet of the control command.
The TCI state may be a TCI state, among the first TCI state and the second TCI state, associated with a lowest octet among the first octet associated with (or indicating) the first TCI state and the second octet associated with (or indicating) the second TCI state. The octet associated with (or indicating) the TCI state may be the lowest octet among the first octet associated with (or indicating) the first TCI state and the second octet associated with (or indicating) the second TCI state.
For example, the first octet associated with (or indicating) the first TCI state may be lower/less than the second octet associated with (or indicating) the second TCI state. The TCI state may be determined as the first TCI state, for example, based on the first octet associated with (or indicating) the first TCI state being lower/less than the second octet associated with (or indicating) the second TCI state. The wireless device may receive the downlink signal based on the first TCI state, for example, based on (e.g., in response to) the first octet associated with (or indicating) the first TCI state being lower/less than the second octet associated with (or indicating) the second TCI state. The base station may send (e.g., transmit) the downlink signal based on the first TCI state, for example, based on (e.g., in response to) the first octet associated with (or indicating) the first TCI state being lower/less than the second octet associated with (or indicating) the second TCI state.
The TCI state may be a TCI state, among the first TCI state and the second TCI state, that occurs first in the list/set/vector of the at least two TCI states (or in the TCI codepoint indicated by the DCI). The TCI state may be a starting/earliest/initial/first TCI state, among the first TCI state and the second TCI state, in the list/set/vector of the at least two TCI states (or in the TCI codepoint indicated by the DCI). For example, as shown in
For example, the at least two TCI states may be equal to [TCI state 26, TCI state 61]. The first TCI state (e.g., TCI state 26) may occur first in the list/set/vector of the at least two TCI states. The first TCI state may be a first/starting/earliest/initial TCI state in the list/set/vector of the at least two TCI states. The TCI state may be the first TCI state, for example, based on the first TCI state occurring first in the list/set/vector of the at least two TCI states. The TCI state may be determined as the first TCI state, for example, based on the first TCI state being the first/starting/earliest/initial TCI state in the list/set/vector of the at least two TCI states. The wireless device may receive the downlink signal based on the first TCI state, for example, based on (e.g., in response to) the first TCI state occurring first in the list/set/vector of the at least two TCI states. The wireless device may receive the downlink signal based on the first TCI state, for example, based on (e.g., in response to) the first TCI state being the first/starting/earliest/initial TCI state in the list/set/vector of the at least two TCI states. The base station may send (e.g., transmit) the downlink signal based on the first TCI state, for example, based on (e.g., in response to) the first TCI state being the first/starting/earliest/initial TCI state in the list/set/vector of the at least two TCI states.
For example, the at least two TCI states may be equal to [TCI state 61, TCI 26]. The second TCI state (e.g., TCI state 61) may occur first in the list/set/vector of the at least two TCI states. The second TCI state may be a first/starting/earliest/initial TCI state in the list/set/vector of the at least two TCI states. The TCI state may be the second TCI state, for example, based on the second TCI state occurring first in the list/set/vector of the at least two TCI states. The TCI state may be determined as the second TCI state, for example, based on the second TCI state being the first/starting/earliest/initial TCI state in the list/set/vector of the at least two TCI states. The wireless device may receive the downlink signal based on the second TCI state, for example, based on (e.g., in response to) the second TCI state occurring first in the list/set/vector of the at least two TCI states. The wireless device may receive the downlink signal based on the second TCI state, for example, based on (e.g., in response to) the second TCI state being the first/starting/earliest/initial TCI state in the list/set/vector of the at least two TCI states. The base station may send (e.g., transmit) the downlink signal based on the second TCI state, for example, based on (e.g., in response to) the second TCI state being the first/starting/earliest/initial TCI state in the list/set/vector of the at least two TCI states.
The CORESET may be associated with the PCI of the cell. The first TCI state may be associated with the PCI of the cell. The second TCI state may be associated with the second PCI different from the PCI of the cell. The wireless device may receive the downlink signal based on the first TCI state, for example, based on (e.g., in response to) the CORESET, that the wireless device receives the DCI scheduling reception of the downlink signal, being associated with the PCI of the cell. The wireless device may receive the downlink signal based on the first TCI state associated with the PCI of the cell, for example, based on (e.g., in response to) the CORESET, that the wireless device receives the DCI scheduling reception of the downlink signal, being associated with the PCI of the cell. The base station may send (e.g., transmit) the downlink signal based on the first TCI state associated with the PCI of the cell, for example, based on (e.g., in response to) the CORESET, that the wireless device receives the DCI scheduling reception of the downlink signal, being associated with the PCI of the cell. The wireless device may receive the downlink signal based on the first TCI state, for example, based on (e.g., in response to) the first TCI state being associated with the PCI of the cell. The wireless device may receive the downlink signal based on the first TCI state, for example, based on (e.g., in response to) the first TCI state and the CORESET being associated with the same PCI (e.g., the PCI of the cell). The wireless device may not receive the downlink signal based on the second TCI state, for example, based on (e.g., in response to) the second TCI state being associated with the second PCI different from the PCI of the cell. The wireless device may not receive the downlink signal based on the second TCI state, for example, based on (e.g., in response to) the second TCI state and the CORESET being associated with different PCIs.
The CORESET may be associated with the second PCI different from the PCI of the cell. The first TCI state may be associated with the PCI of the cell. The second TCI state may be associated with the second PCI different from the PCI of the cell. The wireless device may receive the downlink signal based on the second TCI state, for example, based on (e.g., in response to) the CORESET, that the wireless device receives the DCI scheduling reception of the downlink signal, being associated with the second PCI. The wireless device may receive the downlink signal based on the second TCI state associated with the second PCI, for example, based on (e.g., in response to) the CORESET, that the wireless device receives the DCI scheduling reception of the downlink signal, being associated with the second PCI. The base station may send (e.g., transmit) the downlink signal based on the second TCI state associated with the second PCI, for example, based on (e.g., in response to) the CORESET, that the wireless device receives the DCI scheduling reception of the downlink signal, being associated with the second PCI. The wireless device may receive the downlink signal based on the second TCI state, for example, based on (e.g., in response to) the second TCI state being associated with the second PCI. The wireless device may receive the downlink signal based on the second TCI state, for example, based on (e.g., in response to) the second TCI state and the CORESET being associated with the same PCI (e.g., the second PCI).
The wireless device may not receive the downlink signal based on the first TCI state, for example, based on (e.g., in response to) the first TCI state being associated with the PCI of the cell. The wireless device may not receive the downlink signal based on the first TCI state, for example, based on (e.g., in response to) the first TCI state and the CORESET being associated with different PCIs.
The DCI 1940 (e.g., received at time T3 in
The TCI state may be the first TCI state, for example, if the field is equal/set to a first value (e.g., 0, or 000). The wireless device may receive the downlink signal based on the first TCI state, for example, based on (e.g., in response to) the field of the DCI being equal/set to the first value. The wireless device may buffer the downlink signal based on each of the at least two TCI states. The wireless device may receive (e.g., decode) a copy of the downlink signal that is buffered based on the first TCI state. The wireless device may discard one or more copies of the downlink signal buffered based on the other TCI states of the at least two TCI states.
The TCI state may be the second TCI state, for example, if the field is equal/set to a second value (e.g., 1, 001, or 111). The wireless device may receive the downlink signal based on the second TCI state, for example, based on (e.g., in response to) the field of the DCI being equal/set to the second value. The wireless device may buffer the downlink signal based on each of the at least two TCI states. The wireless device may receive (e.g., decode) a copy of the downlink signal that is buffered based on the second TCI state. The wireless device may discard one or more copies of the downlink signal buffered based on the other TCI states of the at least two TCI states.
A wireless device may perform a method comprising multiple operations. The wireless device may receive one or more configuration parameters indicating a plurality of uplink power control sets for a cell and at least two uplink power control sets of the plurality of uplink power control sets for an uplink bandwidth part (BWP) of the cell. The wireless device may receive downlink control information (DCI) indicating activation of a transmission configuration indicator (TCI) state. The wireless device may, based on the one or more configuration parameters not indicating an uplink power control set index for the TCI state, transmit an uplink signal via the uplink BWP of the cell and using a transmission power determined based on a first uplink power control set of the at least two uplink power control sets. The wireless device may further receive second DCI scheduling transmission of a downlink signal for the cell. A time offset between the second DCI and the downlink signal may be less than a threshold. The wireless device may receive the downlink signal using the TCI state based on the time offset being less than the threshold; and the TCI state being associated with a physical cell identifier (PCI) of the cell. The wireless device may further monitor a control resource set (CORESET) based on a second TCI state and receive second DCI scheduling transmission of a downlink signal for the cell. A time offset between the second DCI and the downlink signal may be less than a threshold. The wireless device may receive the downlink signal using the second TCI state based on: the time offset being less than the threshold; and the TCI state being associated with a physical cell identifier (PCI) different from a PCI of the cell. The wireless device may further determine the first uplink power control set for transmitting the uplink signal based on: the first uplink power control set being associated with a physical cell identifier (PCI); and the PCI being associated with the TCI state. The wireless device may further determine the first uplink power control set for transmitting the uplink signal based on the first uplink power control set being associated with a control resource set (CORESET); and the TCI state being associated with the CORESET. The wireless device may further receive second DCI indicating activation of a second TCI state, and may transmit, based on the one or more configuration parameters not indicating an uplink power control set for the second TCI state, a second uplink signal using a second transmission power determined based on a second uplink power control set of the at least two uplink power control sets. The wireless device may further receive second DCI indicating activation of a second TCI state, and may transmit, based on the one or more configuration parameters indicating a second uplink power control set for the second TCI state, a second uplink signal using a second transmission power determined based on the second uplink power control set. The wireless device may comprise one or more processors and memory, storing instructions, that when executed by the one or more processors perform the method described herein. A system may comprise the wireless device configured to perform the described method, additional operations, and/or include the additional elements; and a base station configured to transmit the one or more messages. A computer-readable medium may store instructions that, when executed, cause performance of the described method, additional operations, and/or include additional elements. A base station may perform a corresponding method comprising multiple operations. The base station may perform a corresponding method, for example, by transmitting the one or more messages.
A wireless device may perform a method comprising multiple operations. A wireless device may receive, a control command indicating a transmission configuration indicator (TCI) state for a cell, and may receive DCI scheduling transmission of a downlink signal for the cell. A time offset between the DCI and the downlink signal is less than a threshold. The wireless device may receive the downlink signal using the TCI state based on: the time offset being less than the threshold; and the TCI state being associated with a physical cell identifier (PCI) of the cell. The downlink signal may be a physical downlink shared channel (PDSCH) reception; or an aperiodic channel state information-reference signal (CSI-RS). The wireless device may further monitor a control resource set (CORESET) based on the TCI state, and may receive third DCI indicating activation of a second TCI state for the cell. The receiving the downlink signal using the TCI state may be further based on the second TCI state being associated with a second PCI different from the PCI of the cell. The wireless device may further receive one or more configuration parameters indicating: a plurality of uplink power control sets for a cell; and at least two uplink power control sets of the plurality of uplink power control sets for an uplink bandwidth part (BWP) of the cell. The wireless device may receive third DCI indicating a second TCI state; and based on the one or more configuration parameters not indicating an uplink power control set index for the second TCI state, transmitting an uplink signal via the uplink BWP of the cell and using a transmission power determined based on a first uplink power control set of the at least two uplink power control sets. The threshold is indicated by capability information of the wireless device. The receiving the downlink signal using the TCI state may be further based on the second DCI being received via a common search space set. At least two TCI states may be activated while the downlink signal is received. The second DCI may indicate a second TCI state of the at least two activated TCI states. The receiving the downlink signal using the TCI state may comprise receiving the downlink signal using the TCI state by applying an antenna port quasi co-location assumption based on the TCI state. The receiving the downlink signal may comprise assuming at least one DM-RS antenna port for receiving the downlink signal being quasi co-located with a reference signal indicated by the TCI state. The wireless device may comprise one or more processors and memory, storing instructions, that when executed by the one or more processors perform the method described herein. A system may comprise the wireless device configured to perform the described method, additional operations, and/or include the additional elements; and a base station configured to transmit the one or more messages. A computer-readable medium may store instructions that, when executed, cause performance of the described method, additional operations, and/or include additional elements. A base station may perform a corresponding method comprising multiple operations. The base station may perform a corresponding method, for example, by transmitting the one or more messages.
A base station may perform a method comprising multiple operations. The base station may send a control command indicating a transmission configuration indicator (TCI) state for a cell, and may send DCI scheduling transmission of a downlink signal for the cell. A time offset between the DCI and the downlink signal may be less than a threshold. The base station may send the downlink signal using the TCI state based on: the time offset being less than the threshold; and the TCI state being associated with a physical cell identifier (PCI) of the cell. The downlink signal may be a physical downlink shared channel (PDSCH) signal; or an aperiodic channel state information-reference signal (CSI-RS). The base station may further send, via a control resource set (CORESET) and based on the TCI state, third DCI indicating a second TCI state for the cell. The sending the downlink signal using the TCI state may be further based on the second TCI state being associated with a second PCI different from the PCI of the cell. The threshold may be indicated by capability information of a wireless device. The sending the downlink signal using the TCI state may be further based on the second DCI being sent via a common search space set. At least two TCI states may be activated while the downlink signal is sent. The second DCI may indicate a second TCI state of the at least two activated TCI states. The sending the downlink signal using the TCI state may comprise sending the downlink signal using the TCI state by applying an antenna port quasi co-location assumption based on the TCI state. The sending the downlink signal may comprise assuming at least one DM-RS antenna port for receiving the downlink signal being quasi co-located with a reference signal indicated by the TCI state. The base station may comprise one or more processors and memory, storing instructions, that when executed by the one or more processors perform the method described herein. A system may comprise the base station configured to perform the described method, additional operations, and/or include the additional elements; and a wireless device configured to receive the one or more messages. A computer-readable medium may store instructions that, when executed, cause performance of the described method, additional operations, and/or include additional elements. A wireless device may perform a corresponding method comprising multiple operations. The wireless device may perform a corresponding method, for example, by receiving the one or more messages.
A wireless device may perform a method comprising multiple operations. A wireless device may monitor a control resource set (CORESET) based on a first transmission configuration indicator (TCI) state, may receive first downlink control information (DCI) indicating a second TCI state for a cell, may receive DCI scheduling transmission of a downlink signal for the cell. A time offset between the DCI and the downlink signal is less than a threshold. The wireless device may receive the downlink signal using the first TCI state based on: the time offset being less than the threshold; and the second TCI state being associated with a second physical cell identifier (PCI) different from a PCI of the cell. The downlink signal may be a physical downlink shared channel (PDSCH) reception; or an aperiodic channel state information-reference signal (CSI-RS). The receiving the downlink signal using the first TCI state may be further based on the first TCI state being associated with the PCI of the cell. The wireless device may further receive one or more configuration parameters indicating: a plurality of uplink power control sets for a cell; and at least two uplink power control sets of the plurality of uplink power control sets for an uplink bandwidth part (BWP) of the cell. The wireless device may receive third DCI indicating activation of a third TCI state; and based on the one or more configuration parameters not indicating an uplink power control set index for the third TCI state, may transmit an uplink signal via the uplink BWP of the cell and using a transmission power determined based on a first uplink power control set of the at least two uplink power control sets. The receiving the downlink signal using the first TCI state may be further based on the second DCI being received via a common search space set. At least two TCI states may be activated while the downlink signal is received. The second DCI may indicate a second TCI state of the at least two activated TCI states. The receiving the downlink signal using the TCI state may comprise receiving the downlink signal using the TCI state by applying an antenna port quasi co-location assumption based on the TCI state. The receiving the downlink signal may comprise assuming at least one DM-RS antenna port for receiving the downlink signal being quasi co-located with a reference signal indicated by the TCI state. The wireless device may comprise one or more processors and memory, storing instructions, that when executed by the one or more processors perform the method described herein. A system may comprise the wireless device configured to perform the described method, additional operations, and/or include the additional elements; and a base station configured to transmit the one or more messages. A computer-readable medium may store instructions that, when executed, cause performance of the described method, additional operations, and/or include additional elements. A base station may perform a corresponding method comprising multiple operations. The base station may perform a corresponding method, for example, by transmitting the one or more messages.
A wireless device may perform a method comprising multiple operations. A wireless device may receive one or more configuration parameters indicating: a plurality of uplink power control sets for a cell; and at least two uplink power control sets of the plurality of uplink power control sets for an uplink bandwidth part (BWP) of the cell. The wireless device may receive a downlink control information (DCI) indicating activation of a transmission configuration indicator (TCI) state; and in response to the one or more configuration parameters not indicating an uplink power control set index for the TCI state. The wireless device may transmit, via the uplink BWP of the cell, an uplink signal with a transmission power determined based on one of the at least two uplink power control sets. The TCI state and the one of the at least two uplink power control sets may be associated with the same physical cell index (PCI). The DCI may indicate activation of a single TCI state. The one of the at least two uplink power control sets may be an uplink power control set that occurs first in a list/vector/set of the at least two uplink power control sets. The one of the at least two uplink power control sets may be an uplink power control set, among the at least two uplink power control sets, with a lowest uplink power control set index. The wireless device may receive an activation command that indicates mapping of at least two TCI states to a TCI codepoint, wherein the at least two TCI states may comprise a first TCI state and a second TCI state. The DCI may comprise a TCI field indicating the TCI codepoint. A first octet, of the activation command, comprising a first TCI state index identifying the first TCI state may be lower than a second octet, of the activation command, comprising a second TCI state index identifying the second TCI state. The one of the at least two uplink power control sets may be: a first uplink power control set of the at least two uplink power control sets based on the TCI state being the first TCI state; and a second uplink power control set of the at least two uplink power control sets based on the TCI state being the second TCI state. The first uplink power control set may occur first in a list/vector/set of the at least two uplink power control sets; and the second uplink power control set may occur second in the list/vector/set of the at least two uplink power control sets. The first uplink power control set may be identified with a lower uplink power control set index than the second uplink power control set; and the second uplink power control set may be identified with a higher uplink power control set index than the first uplink power control set. The TCI state may be not associated with any uplink power control set of the plurality of uplink power control sets based on the one or more configuration parameters not indicating an uplink power control set index for the TCI state. The one or more configuration parameters may indicate, for the uplink BWP of the cell, at least two uplink power control set indexes identifying the at least two uplink power control sets, wherein each uplink power control set index of the at least two uplink power control set indexes may identify a respective uplink power control set of the at least two uplink power control sets. The transmitting the uplink signal may be further based on the TCI state. The wireless device may further determine the transmission power based on one or more power control parameters indicated by the one of the at least two uplink power control sets. The one or more power control parameters may comprise at least one of: a target received power parameter; a closed-loop index parameter; and a pathloss compensation factor parameter. The one of the at least two uplink power control sets may be: the first uplink power control set of the at least two uplink power control sets based on the first TCI state being associated with a first control resource set (coreset) pool index; and the second uplink power control set of the at least two uplink power control sets based on the second TCI state being associated with a second coreset pool index. The TCI state and the one of the at least two uplink power control sets are associated with: a PCI of the cell; or a second PCI different from the PCI of the cell. The one or more configuration parameters may indicate a list of additional PCI indexes for the plurality of uplink power control sets, wherein each additional PCI index of the list of additional PCI indexes may be associated with a respective uplink power control set of the plurality of uplink power control sets. A size of the list of additional PCI indexes may be determined based on a number of the plurality of uplink power control sets. A list of PCI sets may be associated with the plurality of uplink power control sets, wherein each PCI set of the list of PCI sets may be associated with a respective uplink power control set of the at least two uplink power control sets. A first uplink power control set that occurs first in the at least two uplink power control sets may be associated with a PCI of the cell; and a second uplink power control set that occurs second in the at least two uplink power control sets may be associated with a PCI set that occurs first in the list of PCI sets. A first uplink power control set that occurs first in the at least two uplink power control sets may be associated with a first PCI set that occurs first in the list of PCI sets; and a second uplink power control set that occurs second in the at least two uplink power control sets may be associated with a second PCI set that occurs second in the list of PCI sets. The wireless device may further activate the uplink BWP as an active uplink BWP of the cell. A wireless device may receive one or more configuration parameters indicating at least two uplink power control sets for an uplink bandwidth part (BWP) of a cell, may receive a downlink control information (DCI) indicating activation of a transmission configuration indicator (TCI) state associated with a physical cell index (PCI), in response to the TCI state not being associated with any uplink power control set, may select an uplink power control set, among the at least two uplink power control sets, associated with the PCI of the TCI state; and may transmit, via the uplink BWP of the cell, one or more uplink signals with a transmission power determined based on the selected uplink power control set. The wireless device may comprise one or more processors and memory, storing instructions, that when executed by the one or more processors perform the method described herein. A system may comprise the wireless device configured to perform the described method, additional operations, and/or include the additional elements; and a base station configured to transmit the one or more messages. A computer-readable medium may store instructions that, when executed, cause performance of the described method, additional operations, and/or include additional elements. A base station may perform a corresponding method comprising multiple operations. The base station may perform a corresponding method, for example, by transmitting the one or more messages.
A wireless device may perform a method comprising multiple operations. A wireless device may receive a first downlink control information (DCI) indicating activation of at least two transmission configuration indicator (TCI) states for a cell, may receive a second DCI scheduling transmission of a downlink signal, wherein a time offset between the second DCI and the downlink signal is less than a threshold; and based on the time offset being less than the threshold, may receive the downlink signal based on a TCI state among the at least two TCI states. The downlink signal may be a physical downlink shared channel (PDSCH) transmission. The downlink signal may be an aperiodic channel state information reference signal (CSI-RS). The TCI state may be identified with a lowest TCI state index among at least two TCI state indexes of the at least two TCI state indexes. The receiving the downlink signal based on the TCI state may be in response to the TCI state being associated with a physical cell index (PCI) of the cell. The receiving the downlink signal based on the TCI state may be in response to the second DCI being a DCI format 1_0. The receiving the second DCI may be via a search space set associated with a control resource set (coreset). The receiving the downlink signal based on the TCI state may be in response to the search space set being a common search space set. At least one demodulation reference signal (DM-RS) antenna port of the PDSCH transmission may be quasi co-located (QCL-ed) with a reference signal indicated by the TCI state. The receiving the aperiodic CSI-RS based on the TCI state may comprise determining a radio link quality of the aperiodic CSI-RS based on a reference signal indicated by the TCI state. The wireless device may transmit a CSI report indicating the radio link quality of the aperiodic CSI-RS. The TCI state may occur first in a list of the at least two TCI states. The wireless device may further receive an activation command indicating mapping of the at least two TCI states to a TCI codepoint. The second DCI may comprise a TCI field with a value indicating the TCI codepoint. An octet, of the activation command, comprising a TCI state index identifying the TCI state may be lowest among at least two octets, of the activation command, comprising at least two TCI state indexes identifying the at least two TCI states. The wireless device may comprise one or more processors and memory, storing instructions, that when executed by the one or more processors perform the method described herein. A system may comprise the wireless device configured to perform the described method, additional operations, and/or include the additional elements; and a base station configured to transmit the one or more messages. A computer-readable medium may store instructions that, when executed, cause performance of the described method, additional operations, and/or include additional elements. A base station may perform a corresponding method comprising multiple operations. The base station may perform a corresponding method, for example, by transmitting the one or more messages.
One or more of the operations described herein may be conditional. For example, one or more operations may be performed if certain criteria are met, such as in a wireless device, a base station, a radio environment, a network, a combination of the above, and/or the like. Example criteria may be based on one or more conditions such as wireless device and/or network node configurations, traffic load, initial system set up, packet sizes, traffic characteristics, a combination of the above, and/or the like. If the one or more criteria are met, various examples may be used. It may be possible to implement any portion of the examples described herein in any order and based on any condition.
A base station may communicate with one or more of wireless devices. Wireless devices and/or base stations may support multiple technologies, and/or multiple releases of the same technology. Wireless devices may have some specific capability(ies) depending on wireless device category and/or capability(ies). A base station may comprise multiple sectors, cells, and/or portions of transmission entities. A base station communicating with a plurality of wireless devices may refer to a base station communicating with a subset of the total wireless devices in a coverage area. Wireless devices referred to herein may correspond to a plurality of wireless devices compatible with a given LTE, 5G, or other 3GPP or non-3GPP release with a given capability and in a given sector of a base station. A plurality of wireless devices may refer to a selected plurality of wireless devices, a subset of total wireless devices in a coverage area, and/or any group of wireless devices. Such devices may operate, function, and/or perform based on or according to drawings and/or descriptions herein, and/or the like. There may be a plurality of base stations and/or a plurality of wireless devices in a coverage area that may not comply with the disclosed methods, for example, because those wireless devices and/or base stations may perform based on older releases of LTE, 5G, or other 3GPP or non-3GPP technology.
One or more parameters, fields, and/or Information elements (IEs), may comprise one or more information objects, values, and/or any other information. An information object may comprise one or more other objects. At least some (or all) parameters, fields, IEs, and/or the like may be used and can be interchangeable depending on the context. If a meaning or definition is given, such meaning or definition controls.
One or more elements in examples described herein may be implemented as modules. A module may be an element that performs a defined function and/or that has a defined interface to other elements. The modules may be implemented in hardware, software in combination with hardware, firmware, wetware (e.g., hardware with a biological element) or a combination thereof, all of which may be behaviorally equivalent. For example, modules may be implemented as a software routine written in a computer language configured to be executed by a hardware machine (such as C, C++, Fortran, Java, Basic, Matlab or the like) or a modeling/simulation program such as Simulink, Stateflow, GNU Octave, or LabVIEWMathScript. Additionally or alternatively, it may be possible to implement modules using physical hardware that incorporates discrete or programmable analog, digital and/or quantum hardware. Examples of programmable hardware may comprise: computers, microcontrollers, microprocessors, application-specific integrated circuits (ASICs); field programmable gate arrays (FPGAs); and/or complex programmable logic devices (CPLDs). Computers, microcontrollers and/or microprocessors may be programmed using languages such as assembly, C, C++ or the like. FPGAs, ASICs and CPLDs are often programmed using hardware description languages (HDL), such as VHSIC hardware description language (VHDL) or Verilog, which may configure connections between internal hardware modules with lesser functionality on a programmable device. The above-mentioned technologies may be used in combination to achieve the result of a functional module.
One or more features described herein may be implemented in a computer-usable data and/or computer-executable instructions, such as in one or more program modules, executed by one or more computers or other devices. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types when executed by a processor in a computer or other data processing device. The computer executable instructions may be stored on one or more computer readable media such as a hard disk, optical disk, removable storage media, solid state memory, RAM, etc. The functionality of the program modules may be combined or distributed as desired. The functionality may be implemented in whole or in part in firmware or hardware equivalents such as integrated circuits, field programmable gate arrays (FPGA), and the like. Particular data structures may be used to more effectively implement one or more features described herein, and such data structures are contemplated within the scope of computer executable instructions and computer-usable data described herein.
A non-transitory tangible computer readable media may comprise instructions executable by one or more processors configured to cause operations of multi-carrier communications described herein. An article of manufacture may comprise a non-transitory tangible computer readable machine-accessible medium having instructions encoded thereon for enabling programmable hardware to cause a device (e.g., a wireless device, wireless communicator, a wireless device, a base station, and the like) to allow operation of multi-carrier communications described herein. The device, or one or more devices such as in a system, may include one or more processors, memory, interfaces, and/or the like. Other examples may comprise communication networks comprising devices such as base stations, wireless devices or user equipment (wireless device), servers, switches, antennas, and/or the like. A network may comprise any wireless technology, including but not limited to, cellular, wireless, WiFi, 4G, 5G, any generation of 3GPP or other cellular standard or recommendation, any non-3GPP network, wireless local area networks, wireless personal area networks, wireless ad hoc networks, wireless metropolitan area networks, wireless wide area networks, global area networks, satellite networks, space networks, and any other network using wireless communications. Any device (e.g., a wireless device, a base station, or any other device) or combination of devices may be used to perform any combination of one or more of steps described herein, including, for example, any complementary step or steps of one or more of the above steps.
Although examples are described above, features and/or steps of those examples may be combined, divided, omitted, rearranged, revised, and/or augmented in any desired manner. Various alterations, modifications, and improvements will readily occur to those skilled in the art. Such alterations, modifications, and improvements are intended to be part of this description, though not expressly stated herein, and are intended to be within the spirit and scope of the descriptions herein. Accordingly, the foregoing description is by way of example only, and is not limiting.
Claims
1. A method comprising:
- receiving, by a wireless device, a control command indicating a transmission configuration indicator (TCI) state;
- receiving downlink control information (DCI) scheduling transmission of a downlink signal, wherein a time offset between the DCI and the downlink signal is less than a threshold; and
- based on the time offset being less than the threshold and the TCI state being associated with a physical cell identifier (PCI) of a serving cell, receiving the downlink signal using the TCI state.
2. The method of claim 1, further comprising:
- receiving, by the wireless device, one or more configuration parameters indicating: a plurality of uplink power control sets for a second cell; and at least two uplink power control sets of the plurality of uplink power control sets for an uplink bandwidth part (BWP) of the second cell;
- receiving second DCI indicating activation of a second TCI state; and
- based on the one or more configuration parameters not indicating an uplink power control set index for the second TCI state, transmitting an uplink signal via the uplink BWP of the second cell and using a transmission power determined based on a first uplink power control set of the at least two uplink power control sets.
3. The method of claim 1, wherein the downlink signal is:
- a physical downlink shared channel (PDSCH) reception; or
- an aperiodic channel state information-reference signal (CSI-RS).
4. The method of claim 1, further comprising:
- monitoring, by the wireless device, a control resource set (CORESET) based on the TCI state;
- receiving second DCI indicating a second TCI state; and
- wherein the receiving the downlink signal using the TCI state is further based on the second TCI state being associated with a second PCI different from the PCI of the serving cell.
5. The method of claim 1, wherein the threshold is indicated by capability information of the wireless device.
6. The method of claim 1, wherein the receiving the downlink signal using the TCI state comprises receiving the downlink signal using the TCI state by applying an antenna port quasi co-location assumption based on the TCI state.
7. The method of claim 1, wherein the receiving the downlink signal by the TCI state comprises assuming at least one DM-RS antenna port for receiving the downlink signal being quasi co-located with a reference signal indicated by the TCI state.
8. A method comprising:
- monitoring, by a wireless device, a control resource set (CORESET) based on a first transmission configuration indicator (TCI) state;
- receiving a control command indicating a second TCI state;
- receiving downlink control information (DCI) scheduling transmission of a downlink signal for the cell, wherein a time offset between the DCI and the downlink signal is less than a threshold; and
- based on the time offset being less than the threshold and the second TCI state being associated with a second physical cell identifier (PCI) different from a PCI of a serving cell, receiving the downlink signal using the first TCI state.
9. The method of claim 8, further comprising:
- receiving, by the wireless device, one or more configuration parameters indicating: a plurality of uplink power control sets for a second cell; and at least two uplink power control sets of the plurality of uplink power control sets for an uplink bandwidth part (BWP) of the second cell;
- receiving second DCI indicating a third TCI state; and
- based on the one or more configuration parameters not indicating an uplink power control set index for the third TCI state, transmitting an uplink signal via the uplink BWP of the cell and using a transmission power determined based on a first uplink power control set of the at least two uplink power control sets.
10. The method of claim 8, wherein the downlink signal is:
- a physical downlink shared channel (PDSCH) reception; or
- an aperiodic channel state information-reference signal (CSI-RS).
11. The method of claim 8, wherein the receiving the downlink signal using the TCI state comprises receiving the downlink signal using the TCI state by applying an antenna port quasi co-location assumption based on the TCI state.
12. The method of claim 8, wherein the receiving the downlink signal comprises assuming at least one DM-RS antenna port for receiving the downlink signal being quasi co-located with a reference signal indicated by the TCI state.
13. The method of claim 8, wherein the receiving the downlink signal using the first TCI state is further based on the first TCI state being associated with the PCI of the serving cell.
14. A method comprising:
- receiving, by a wireless device, one or more configuration parameters indicating: a plurality of uplink power control sets for a cell; and at least two uplink power control sets of the plurality of uplink power control sets for an uplink bandwidth part (BWP) of the cell;
- receiving downlink control information (DCI) indicating a transmission configuration indicator (TCI) state; and
- based on the one or more configuration parameters not indicating an uplink power control set index for the TCI state, transmitting an uplink signal via the uplink BWP of the cell and using a transmission power determined based on a first uplink power control set of the at least two uplink power control sets.
15. The method of claim 14, further comprising:
- receiving second DCI scheduling transmission of a downlink signal, wherein a time offset between the second DCI and the downlink signal is less than a threshold; and
- based on the time offset being less than the threshold and the TCI state being associated with a physical cell identifier (PCI) of a serving cell, receiving the downlink signal using the TCI state.
16. The method of claim 14, further comprising:
- monitoring, by the wireless device, a control resource set (CORESET) based on a second TCI state;
- receiving second DCI scheduling transmission of a downlink signal, wherein a time offset between the second DCI and the downlink signal is less than a threshold; and
- based on the time offset being less than the threshold and the TCI state being associated with a physical cell identifier (PCI) different from a PCI of a serving cell, receiving the downlink signal using the second TCI state.
17. The method of claim 14, further comprising determining the first uplink power control set for transmitting the uplink signal based on:
- the first uplink power control set being associated with a physical cell identifier (PCI); and
- the PCI being associated with the TCI state.
18. The method of claim 14, further comprising determining the first uplink power control set for transmitting the uplink signal based on:
- the first uplink power control set being associated with a control resource set (CORESET); and
- the TCI state being associated with the CORESET.
19. The method of claim 14, further comprising:
- receiving second DCI indicating a second TCI state; and
- transmitting, based on the one or more configuration parameters not indicating an uplink power control set for the second TCI state, a second uplink signal using a second transmission power determined based on a second uplink power control set of the at least two uplink power control sets.
20. The method of claim 14, further comprising:
- receiving second DCI indicating a second TCI state; and
- transmitting, based on the one or more configuration parameters indicating a second uplink power control set for the second TCI state, a second uplink signal using a second transmission power determined based on the second uplink power control set.
Type: Application
Filed: Apr 28, 2023
Publication Date: Nov 2, 2023
Inventors: Ali Cagatay Cirik (Chantilly, VA), Hua Zhou (Vienna, VA), Esmael Hejazi Dinan (McLean, VA), Kai Xu (Herndon, VA)
Application Number: 18/308,787
